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Any replacements are listed further down

[258] **viXra:1705.0019 [pdf]**
*submitted on 2017-05-02 04:07:01*

**Authors:** Robert B. Easter, Eckhard Hitzer

**Comments:** 25 Pages. Published online First in AACA, 20th April 2017. DOI: 10.1007/s00006-017-0784-0. 2 tables, 26 references.

This paper introduces the Double Conformal / Darboux Cyclide Geometric Algebra (DCGA), based in the $\mathcal{G}_{8, 2}$ Clifford geometric algebra. DCGA is an extension of CGA and has entities representing points and general (quartic) Darboux cyclide surfaces in Euclidean 3D space, including circular tori and all quadrics, and all surfaces formed by their inversions in spheres. Dupin cyclides are quartic surfaces formed by inversions in spheres of torus, cylinder, and cone surfaces. Parabolic cyclides are cubic surfaces formed by inversions in spheres that are centered on points of other surfaces. All DCGA entities can be transformed by versors, and reflected in spheres and planes.
Keywords: Conformal geometric algebra, Darboux Dupin cyclide, Quadric
surface
Math. Subj. Class.: 15A66, 53A30, 14J26, 53A05, 51N20, 51K05

**Category:** Algebra

[257] **viXra:1702.0234 [pdf]**
*submitted on 2017-02-18 21:44:17*

**Authors:** Robert B. Easter

**Comments:** 8 Pages.

This note very briefly describes or sketches the general ideas of some applications of the G(p,q) Geometric Algebra (GA) of a complex vector space C^(p,q) of signature (p,q), which is also known as the Clifford algebra Cl(p,q). Complex number scalars are only used for the anisotropic dilation (directed scaling) operation and to represent infinite distances, but otherwise only real number scalars are used. The anisotropic dilation operation is implemented in Minkowski spacetime as hyperbolic rotation (boost) by an imaginary rapidity (+/-)f = atanh(sqrt(1-d^2)) for dilation factor d>1, using +f in the Minkowski spacetime of signature (1,n) and -f in the signature (n,1).
The G(k(p+q+2),k(q+p+2)) Mother Algebra of CGA (k-MACGA) is a generalization of G(p+1,q+1) Conformal Geometric Algebra (CGA) having k orthogonal G(p+1,q+1):p>q Euclidean CGA (ECGA) subalgebras and k orthogonal G(q+1,p+1) anti-Euclidean CGA (ACGA) subalgebras with opposite signature. Any k-MACGA has an even 2k total count of orthogonal subalgebras and cannot have an odd 2k+1 total count of orthogonal subalgebras.
The more generalized G(l(p+1)+m(q+1),l (q+1)+m(p+1)):p>q k-CGA algebra, for even or odd k=l+m, has any l orthogonal G(p+1,q+1) ECGA subalgebras and any m orthogonal G(q+1,p+1) ACGA subalgebras with opposite signature. Any 2k-CGA with even 2k orthogonal subalgebras can be represented as a k-MACGA with different signature, requiring some sign changes.
All of the orthogonal CGA subalgebras are corresponding by representing the same vectors, geometric entities, and transformation versors in each CGA subalgebra, which may differ only by some sign changes.
A k-MACGA or a 2k-CGA has even-grade 2k-vector geometric inner product null space (GIPNS) entities representing general even-degree 2k polynomial implicit hypersurface functions F for even-degree 2k hypersurfaces, usually in a p-dimensional space or (p+1)-spacetime. Only a k-CGA with odd k has odd-grade k-vector GIPNS entities representing general odd-degree k polynomial implicit hypersurface functions F for odd-degree k hypersurfaces, usually in a p-dimensional space or (p+1)-spacetime. In any k-CGA, there are k-blade GIPNS entities representing the usual G(p+1,q+1) CGA GIPNS 1-blade entities, but which are representing an implicit hypersurface function F^k with multiplicity k and the k-CGA null point entity is a k-point entity. In the conformal Minkowski spacetime algebras G(p+1,2) and G(2,p+1), the null 1-blade point embedding is a GOPNS null 1-blade point entity but is a GIPNS null 1-blade hypercone entity.

**Category:** Algebra

[256] **viXra:1702.0057 [pdf]**
*submitted on 2017-02-03 16:53:05*

**Authors:** William O. Straub

**Comments:** 6 Pages.

Elementary overview of the Levi-Civita symbol, emphasizing its dependence on the Kronecker delta

**Category:** Algebra

[255] **viXra:1702.0038 [pdf]**
*submitted on 2017-02-02 16:32:16*

**Authors:** Martin Erik Horn

**Comments:** 12 Pages.

Using Geometric Algebra consistent solutions of inconsistent systems of linear equations can be found.

**Category:** Algebra

[254] **viXra:1612.0259 [pdf]**
*submitted on 2016-12-16 07:05:01*

**Authors:** Claude Michael Cassano

**Comments:** 3 Pages.

A two-dimensional vector space algebra with identity 2x2 matrix basis matrix multiplication homomorphism
There exists a homomorphism between any two-dimensional vector space algebra with identity and a 2x2 matrix basis under ordinary matrix multiplication.
This is a statement of constructive existence of an algebra.
Given that the vector space of the algebra is known to be 2-dimensional, the algebra product determines the constants: A,B,b ; determining the basis of the algebra.
And showing that the basis of a two-dimensional vector space unitary algebra is a cyclic group of order 2

**Category:** Algebra

[253] **viXra:1612.0221 [pdf]**
*submitted on 2016-12-12 03:18:52*

**Authors:** Robert Benjamin Easter, Eckhard Hitzer

**Comments:** 6 Pages. Proceedings of SSI 2016, Session SS11, pp. 866-871, 6-8 Dec. 2016, Ohtsu, Shiga, Japan, 10 color figures.

The G_{8,2} Geometric Algebra, also called the Double Conformal / Darboux Cyclide Geometric Algebra (DCGA), has entities that represent conic sections. DCGA also has entities that represent planar sections of Darboux cyclides, which are called cyclidic sections in this paper. This paper presents these entities and many operations on them. Operations include projection, rejection, and intersection with respect to spheres and planes. Other operations include rotation, translation, and dilation. Possible applications are introduced that include orthographic and perspective projections of conic sections onto view planes, which may be of interest in computer graphics or other computational geometry subjects.

**Category:** Algebra

[252] **viXra:1611.0078 [pdf]**
*submitted on 2016-11-05 17:24:07*

**Authors:** Carauleanu Marc

**Comments:** 3 Pages.

In this paper, we prove interesting alternative representations of the simple fraction x/2 where x is a real number using complex numbers.

**Category:** Algebra

[251] **viXra:1610.0353 [pdf]**
*submitted on 2016-10-29 08:05:38*

**Authors:** Reza Farhadian

**Comments:** 4 Pages.

In this paper, We present a new method to compute the determinant of a 4 × 4 matrix, that is very simplest than previous methods in this subject. This method is obtained by a new definition of fraction and also by using the Dodgson’s condensation method and Salihu’s method.

**Category:** Algebra

[250] **viXra:1610.0178 [pdf]**
*submitted on 2016-10-16 13:16:55*

**Authors:** W. B. Vasantha Kandasamy, K. Ilanthenral, Florentin Smarandach

**Comments:** 262 Pages.

In this book for the first time authors describe and develop the new notion of MOD natural neutrosophic semirings using Z^I_n, C_I(Zn),

**Category:** Algebra

[249] **viXra:1610.0118 [pdf]**
*submitted on 2016-10-11 13:57:41*

**Authors:** Ameet Sharma

**Comments:** 15 Pages.

We present notes on the Marcus-de Oliveira conjecture. The conjecture concerns the region in the complex plane covered by the determinants of the sums of two normal matrices with prescribed eigenvalues. Call this region ∆U . Let ∆O be the restriction of ∆U to determinants of sums of symmetric normal matrices. In this paper, we conjecture that ∆O has the same boundary as ∆U. We prove the conjecture for the cases: 1) at least one of the two matrices has just one eigenvalue, 2) at least one of the two matrices has distinct eigenvalues. The implication of this theorem is that proving the Marcus-de Oliveira conjecture for symmetric normal matrices would prove it for the general case. This paper builds on work in [1].

**Category:** Algebra

[248] **viXra:1609.0262 [pdf]**
*submitted on 2016-09-17 15:49:01*

**Authors:** Eli Halylaurin

**Comments:** 4 Pages. This document is french written.

This document is an attempt to demonstrate a general structure theorem for abelian groups (finite or not). Such a theorem already exists in the finite case, but the infinite case does not seem to have been deeply studied. This is what it is proposed to do in this document. To achieve this task, Zorn Lemma will be used. We will try to prove each abelian group can be written, modulo isomorphism, as a direct product of groups that we will called elementary, because they can be represented upon a circle or a line. This work may be very valuable for every mathematicians who like to better understand the structure of groups.

**Category:** Algebra

[247] **viXra:1608.0308 [pdf]**
*submitted on 2016-08-24 06:17:36*

**Authors:** Florentin Smarandache, Jean Dezert, Xinde Li

**Comments:** 11 Pages.

This chapter presents the DSm Field and Linear Algebra of Refined Labels (FLARL) in DSmT framework in order to work precisely with qualitative labels for information fusion. We present and justify the basic operators on qualitative labels (addition, subtraction,
multiplication, division, root, power, etc).

**Category:** Algebra

[246] **viXra:1608.0136 [pdf]**
*submitted on 2016-08-12 21:45:01*

**Authors:** A. D. Godase, M. B. Dhakne

**Comments:** 10 Pages.

We represent finite group in the form of a graph, these graphs are called unit graph. Since
the main role in obtaining the graph is played by the unit element of the group, this study is
innovative. Also study of different properties like the subgroups of a group, normal
subgroups of a group are carried out using the unit graph of the group.

**Category:** Algebra

[245] **viXra:1608.0039 [pdf]**
*submitted on 2016-08-03 18:36:06*

**Authors:** Oh Jung Uk

**Comments:** 19 Pages.

If ∀P:proposition, B(P) is the truth value(0 or 1) of P then we can solve a boolean equation by using these below.
B(p_1∨p_2∨…∨p_n )≡1+∏_(k=1)^n▒(1+p_k ) (mod 2)
{ (x_1,x_2,…,x_n ) | ∏_(i=1)^n▒B(x_i ) ≡0(mod 2)}=(⋂_(i=1)^n▒{ (x_i ) | B(x_i )≡1(mod 2)} )^c={(x_1,x_2,…,x_n ) |(1,1,1,…,1)}^c

**Category:** Algebra

[244] **viXra:1607.0508 [pdf]**
*submitted on 2016-07-27 01:56:49*

**Authors:** S.A. Akinleye, F. Smarandache, A.A.A. Agboola

**Comments:** 5 Pages.

In this paper we present the concept of neutrosophic quadruple algebraic structures. Specially, we study neutrosophic quadruple rings and we present their elementary properties.

**Category:** Algebra

[243] **viXra:1607.0499 [pdf]**
*submitted on 2016-07-27 03:00:47*

**Authors:** T.Nakashima

**Comments:** 1 Page.

Aﬃrmative resolve of Kothe conjecture

**Category:** Algebra

[242] **viXra:1607.0498 [pdf]**
*submitted on 2016-07-27 03:02:03*

**Authors:** T.Nakashima

**Comments:** 1 Page.

The counter example of Jacobson conjecture

**Category:** Algebra

[241] **viXra:1607.0350 [pdf]**
*submitted on 2016-07-18 07:16:53*

**Authors:** Florentin Smarandache

**Comments:** 3 Pages.

I consider that life and practice do not deal with pure spaces, but with a group of many spaces, with a mixture of structures, a 'mongrel', a heterogeneity - the ardently preoccupation
is to reunite them! to constitute a multi-structure.

**Category:** Algebra

[240] **viXra:1607.0345 [pdf]**
*submitted on 2016-07-18 07:22:25*

**Authors:** Florentin Smarandache

**Comments:** 4 Pages.

A sequence is the range of a function whose domain is a subset of Z.

**Category:** Algebra

[239] **viXra:1607.0340 [pdf]**
*submitted on 2016-07-18 07:28:27*

**Authors:** Florentin Smarandache

**Comments:** 3 Pages.

In one of his books (“Analysis…”) Mr. Paul Erdös proposed the following problem.

**Category:** Algebra

[238] **viXra:1607.0339 [pdf]**
*submitted on 2016-07-18 07:29:13*

**Authors:** Florentin Smarandache

**Comments:** 2 Pages.

Paul Erdös has proposed the following problem.

**Category:** Algebra

[237] **viXra:1607.0337 [pdf]**
*submitted on 2016-07-18 07:31:31*

**Authors:** Florentin Smarandache

**Comments:** 4 Pages.

In this article we prove that the equation ϕ (x) = n admits a finite number of solutions, we find the general form of these solutions

**Category:** Algebra

[236] **viXra:1607.0336 [pdf]**
*submitted on 2016-07-18 07:32:21*

**Authors:** Florentin Smarandache

**Comments:** 3 Pages.

In this note we present a method of solving this Diophantine equation, method which is different from Ljunggren’s, Mordell’s, and R.K.Guy’s.

**Category:** Algebra

[235] **viXra:1607.0335 [pdf]**
*submitted on 2016-07-18 07:33:54*

**Authors:** Bencze MihÁly, Florentin Smarandache

**Comments:** 4 Pages.

By multiplication we obtain the statement. We prove in the same way for cos x.

**Category:** Algebra

[234] **viXra:1607.0332 [pdf]**
*submitted on 2016-07-18 07:37:01*

**Authors:** Florentin Smarandache

**Comments:** 3 Pages.

Où se trouve la faute ? (equations diophantiennes).

**Category:** Algebra

[233] **viXra:1607.0328 [pdf]**
*submitted on 2016-07-18 07:49:06*

**Authors:** Florentin Smarandache

**Comments:** 3 Pages.

This article is on P-Q Relationships and Sequences.

**Category:** Algebra

[232] **viXra:1607.0327 [pdf]**
*submitted on 2016-07-18 07:50:34*

**Authors:** Florentin Smarandache

**Comments:** 3 Pages.

Any odd number can be expressed as a sum of two primes.

**Category:** Algebra

[231] **viXra:1607.0326 [pdf]**
*submitted on 2016-07-18 07:51:57*

**Authors:** Florentin Smarandache

**Comments:** 2 Pages.

Cet article généralise cerrtains résultats sur les nédiannes.

**Category:** Algebra

[230] **viXra:1607.0321 [pdf]**
*submitted on 2016-07-18 07:57:53*

**Authors:** Florentin Smarandache

**Comments:** 4 Pages.

This article is on Sequences of Sub-Sequences.

**Category:** Algebra

[229] **viXra:1607.0320 [pdf]**
*submitted on 2016-07-18 07:59:18*

**Authors:** Smarandache Type Function Obtained by Duality

**Comments:** 17 Pages.

In this paper we extended the Smarandache function from the set N' of positive integers to the set Q of rationals.

**Category:** Algebra

[228] **viXra:1607.0318 [pdf]**
*submitted on 2016-07-18 08:00:58*

**Authors:** Florentin Smarandache

**Comments:** 4 Pages.

liVe have constructed a function n which associates to each non-null integer m the smallest
positive n such that n! is a multiple of m.

**Category:** Algebra

[227] **viXra:1607.0317 [pdf]**
*submitted on 2016-07-18 08:01:42*

**Authors:** Florentin Smarandache

**Comments:** 4 Pages.

Let N be a positive integer with not all digits the same, and N' its digital reverse.

**Category:** Algebra

[226] **viXra:1607.0312 [pdf]**
*submitted on 2016-07-18 08:06:10*

**Authors:** Florentin Smarandache

**Comments:** 16 Pages.

What are the instructor's general responsabilities ?

**Category:** Algebra

[225] **viXra:1607.0311 [pdf]**
*submitted on 2016-07-18 08:07:19*

**Authors:** Florentin Smarandache

**Comments:** 4 Pages.

L'utilité du cet article est qu'il établit si le nombre des solutions naturelles d'une équation linéaire est limité ou non.

**Category:** Algebra

[224] **viXra:1607.0310 [pdf]**
*submitted on 2016-07-18 08:08:59*

**Authors:** Florentin Smarandache

**Comments:** 3 Pages.

Cet article nous presente la resolution l’équations du second degré a deux inconnues dans Z.

**Category:** Algebra

[223] **viXra:1607.0309 [pdf]**
*submitted on 2016-07-18 08:10:57*

**Authors:** Florentin Smarandache

**Comments:** 3 Pages.

Dans cet article on construit des ensembles qui ont la proprieté suivente: quel que soit leur partage en (Leux sous-ensembles, au moins l'un de ces sous-ensembles contient au moins trois éléments en progression arithmétique (ou bien géométrique).

**Category:** Algebra

[222] **viXra:1607.0308 [pdf]**
*submitted on 2016-07-18 08:11:45*

**Authors:** Florentin Smarandache

**Comments:** 3 Pages.

The American Mathematical Association of Two-Year Colleges organizes each year a mathematical competition.

**Category:** Algebra

[221] **viXra:1607.0299 [pdf]**
*submitted on 2016-07-18 08:28:30*

**Authors:** Florentin Smarandache

**Comments:** 4 Pages.

Cet article presente une application de la
generalisation du théorème du Ceva.

**Category:** Algebra

[220] **viXra:1607.0298 [pdf]**
*submitted on 2016-07-18 08:29:56*

**Authors:** Florentin Smarandache

**Comments:** 8 Pages.

Dans cet article on construit une classe d' ensembles récursifs, on établit des propriétés de ces ensembles et on propose des applications.

**Category:** Algebra

[219] **viXra:1607.0297 [pdf]**
*submitted on 2016-07-18 08:30:57*

**Authors:** Florentin Smarandache

**Comments:** 2 Pages.

Cet article presente une généralisation de l’inegalité Cauchy-Bouniakovski-Schwartz.

**Category:** Algebra

[218] **viXra:1607.0296 [pdf]**
*submitted on 2016-07-18 08:32:37*

**Authors:** Florentin Smarandache

**Comments:** 6 Pages.

Dans les paragraphes qui suivent nous alions démontrer un resultat qui remplace le teorème d' Euler.

**Category:** Algebra

[217] **viXra:1607.0295 [pdf]**
*submitted on 2016-07-18 08:33:58*

**Authors:** Florentin Smarandache

**Comments:** 3 Pages.

On géneralise l'inégalité de Holder grâce à un raisonement par récurrence.

**Category:** Algebra

[216] **viXra:1607.0294 [pdf]**
*submitted on 2016-07-18 08:34:54*

**Authors:** Florentin Smarandache

**Comments:** 2 Pages.

Cet article presente une généralisation de l’inégalité de Minkowski.

**Category:** Algebra

[215] **viXra:1607.0293 [pdf]**
*submitted on 2016-07-18 08:35:50*

**Authors:** Florentin Smarandache

**Comments:** 2 Pages.

Cet article presente une généralisation de
l’inegalité de Tcebychev.

**Category:** Algebra

[214] **viXra:1607.0292 [pdf]**
*submitted on 2016-07-18 08:36:49*

**Authors:** Florentin Smarandache

**Comments:** 3 Pages.

Cet article presente une généralisation d’une théorème de Carnot.

**Category:** Algebra

[213] **viXra:1607.0287 [pdf]**
*submitted on 2016-07-18 04:49:33*

**Authors:** Bencze MihÁly, Florentin Smarandache

**Comments:** 4 Pages.

Many methods to compute the sum ofthe same powers of the first n natural numbers are well-known.
In this paper we present a simple proof of the method.

**Category:** Algebra

[212] **viXra:1607.0285 [pdf]**
*submitted on 2016-07-18 04:52:25*

**Authors:** Bencze MihÁly, Florentin Smarandache

**Comments:** 12 Pages.

In our paper we give a method, based on characteristic function of the set, of resolving some difficult problem of set theory found in high
school study.

**Category:** Algebra

[211] **viXra:1607.0284 [pdf]**
*submitted on 2016-07-18 04:55:44*

**Authors:** Bencze MihÁly, Florin Popovici, Florentin Smarandache

**Comments:** 3 Pages.

the square of an odd prime number can't be very perfect number.

**Category:** Algebra

[210] **viXra:1607.0282 [pdf]**
*submitted on 2016-07-18 04:58:02*

**Authors:** Florentin Smarandache

**Comments:** 7 Pages.

In this paper I shall construct a function n having the following properties.

**Category:** Algebra

[209] **viXra:1607.0277 [pdf]**
*submitted on 2016-07-18 05:10:32*

**Authors:** Florentin Smarandache

**Comments:** 7 Pages.

In the paragraphs which follow we will prove a result which replaces the theorem of Euler.

**Category:** Algebra

[208] **viXra:1607.0276 [pdf]**
*submitted on 2016-07-18 05:11:16*

**Authors:** Florentin Smarandache

**Comments:** 3 Pages.

One generalizes the inequality of Hödler thanks to a reasoning by recurrence. As particular cases, one obtains a generalization of the inequality of Cauchy-Buniakovski-Scwartz, and some interesting applications.

**Category:** Algebra

[207] **viXra:1607.0275 [pdf]**
*submitted on 2016-07-18 05:12:13*

**Authors:** Bencze MihÁly, Florin Popovici, Florentin Smarandache

**Comments:** 6 Pages.

In this paper we show a generalization of Leibniz's theorem and an application of this.

**Category:** Algebra

[206] **viXra:1607.0263 [pdf]**
*submitted on 2016-07-18 05:28:21*

**Authors:** Florentin Smarandache

**Comments:** 23 Pages.

W.Sierpinski has asserted to an international conference that if mankind lasted for ever
and numbered the unsolved problems, then in the long run all these unsolved problems would be solved.

**Category:** Algebra

[205] **viXra:1607.0262 [pdf]**
*submitted on 2016-07-18 05:29:13*

**Authors:** Florentin Smarandache

**Comments:** 6 Pages.

An algorithm is given that ascertains whether a linear equation has integer number solutions or not; if it does, the general integer solution is determined.

**Category:** Algebra

[204] **viXra:1607.0261 [pdf]**
*submitted on 2016-07-18 05:30:26*

**Authors:** Florentin Smarandache

**Comments:** 8 Pages.

In this section is presented a new integer number algorithm for linear equation.This algorithm is more “rapid” than W. Sierpinski’s presented in the sense that it reaches the general solution after a smaller number of iterations. Its correctness will be thoroughly demonstrated.

**Category:** Algebra

[203] **viXra:1607.0259 [pdf]**
*submitted on 2016-07-18 05:33:51*

**Authors:** Florentin Smarandache

**Comments:** 5 Pages.

In this article we define a function L which will allow us to generalize (separately or simultaneously) some theorems from Numbers Theory obtained by Wilson, Fermat, Euler, Gauss, Lagrange, Leibnitz, Moser, Sierpinski.

**Category:** Algebra

[202] **viXra:1607.0255 [pdf]**
*submitted on 2016-07-18 05:37:55*

**Authors:** Florentin Smarandache

**Comments:** 3 Pages.

There are many papers on this subject, but the author cites the papers which have influenced him, especially Klee’s papers.

**Category:** Algebra

[201] **viXra:1607.0252 [pdf]**
*submitted on 2016-07-18 05:41:53*

**Authors:** Florentin Smarandache

**Comments:** 3 Pages.

In nota urmatoare se fac cateva remarci privind metoda expusa de Sierpinski, remarci ce au ca scop sirnplificarea si extinderea acestei metode.

**Category:** Algebra

[200] **viXra:1607.0251 [pdf]**
*submitted on 2016-07-18 05:43:32*

**Authors:** Florentin Smarandache

**Comments:** 15 Pages.

Am construit o functie care asociaza fiecarui intreg nenul n cel mai mic intreg pozitiv m astfel incat m! este multiplu de n.

**Category:** Algebra

[199] **viXra:1607.0247 [pdf]**
*submitted on 2016-07-18 05:58:29*

**Authors:** Florentin Smarandache

**Comments:** 4 Pages.

Dans cet article on élargit les notions de "coefficients binomiaux" et de "coefficients trinomiaux" à la notion de"coefficients
k-nomiaux~ et on obtient quelques propriétés générales de ceux-ci. Comme application, on généralisera le "triangle de Pascal".

**Category:** Algebra

[198] **viXra:1607.0246 [pdf]**
*submitted on 2016-07-18 06:00:10*

**Authors:** Florentin Smarandache

**Comments:** 4 Pages.

Any odd integer n can be expressed as a combination of three primes.

**Category:** Algebra

[197] **viXra:1607.0245 [pdf]**
*submitted on 2016-07-18 06:01:23*

**Authors:** Florentin Smarandache

**Comments:** 5 Pages.

Five conjectures on paires of consecutive primes are listed below with examples in each case.

**Category:** Algebra

[196] **viXra:1607.0243 [pdf]**
*submitted on 2016-07-18 06:03:33*

**Authors:** Florentin Smarandache

**Comments:** 28 Pages.

Teoria Numerelor reprezinta pentru mine o pasiune. Rezultatele expuse mai departe constituie
rodul catorva ani buni de cercetari si cautari.

**Category:** Algebra

[195] **viXra:1607.0242 [pdf]**
*submitted on 2016-07-18 06:04:48*

**Authors:** Florentin Smarandache

**Comments:** 4 Pages.

Dans cet article, on construit une famille d'expressions E (n).

**Category:** Algebra

[194] **viXra:1607.0237 [pdf]**
*submitted on 2016-07-18 06:12:59*

**Authors:** Florentin Smarandache

**Comments:** 2 Pages.

Ces fantaisies mathematiques sont des divertissements, des problèmes amusants : elles font abstraction de la logique communne, mais elles ont quand meme leur "logique", une logique fantaisiste.

**Category:** Algebra

[193] **viXra:1607.0236 [pdf]**
*submitted on 2016-07-18 06:14:14*

**Authors:** Florentin Smarandache

**Comments:** 4 Pages.

We screen this sequence, selecting only the terms whose digits also satisfy the property or relationship.

**Category:** Algebra

[192] **viXra:1607.0235 [pdf]**
*submitted on 2016-07-18 06:24:48*

**Authors:** Florentin Smarandache

**Comments:** 4 Pages.

De nos jours on met un accent puissant sur la correlation de l'enseignement avec la recherche et la production.

**Category:** Algebra

[191] **viXra:1607.0232 [pdf]**
*submitted on 2016-07-18 06:27:47*

**Authors:** Florentin Smarandache

**Comments:** 9 Pages.

Este bine cunoscuta importanta functiilor aritmetice in teoria numerelor, importanta datorata pe de-a parte bogatiei rezultatelor ce se obtin cu ajutorul acestor functii, si pe de alta
parte frumusetii acestor rezultate.

**Category:** Algebra

[190] **viXra:1607.0231 [pdf]**
*submitted on 2016-07-18 06:28:46*

**Authors:** Florentin Smarandache

**Comments:** 2 Pages.

Vom construi urmatoare1e functii pe care le numim prime.

**Category:** Algebra

[189] **viXra:1607.0224 [pdf]**
*submitted on 2016-07-18 06:43:25*

**Authors:** Florentin Smarandache

**Comments:** 2 Pages.

Due to professor Gane Policarp’s kindness, I have several issues of “Caietul de informare matematică” (“The Notebook of Mathematical Information”), which has beenput together with attention to detail and skill, and which attracted and persuaded me, fromthe very beginning, to collaborate with small materials.

**Category:** Algebra

[188] **viXra:1607.0220 [pdf]**
*submitted on 2016-07-18 06:48:58*

**Authors:** Florentin Smarandache

**Comments:** 3 Pages.

We construct the system of n+2 axioms.

**Category:** Algebra

[187] **viXra:1607.0219 [pdf]**
*submitted on 2016-07-18 06:49:51*

**Authors:** Bencze MihÁly, Florin Popovici, Florentin Smarandache

**Comments:** 4 Pages.

In this paper we prove some inequalities for the integer part function and we give some applications in the number theory.

**Category:** Algebra

[186] **viXra:1607.0218 [pdf]**
*submitted on 2016-07-18 06:51:02*

**Authors:** Florentin Smarandache

**Comments:** 2 Pages.

Se prezinta in aceasta nota o extindere a unei probleme data la Olimpiada de matematica,
faza locala, la Ramnicul VaIcea, clasa a VI-a, 1980.

**Category:** Algebra

[185] **viXra:1607.0216 [pdf]**
*submitted on 2016-07-18 06:53:18*

**Authors:** Florentin Smarandache

**Comments:** 9 Pages.

In this article are presented Definitions and properties of the integer solutions of linear equations.

**Category:** Algebra

[184] **viXra:1607.0212 [pdf]**
*submitted on 2016-07-18 06:58:28*

**Authors:** Florentin Smarandache

**Comments:** 2 Pages.

A un concours d'entré en faculté on pose le problème suivant.

**Category:** Algebra

[183] **viXra:1607.0211 [pdf]**
*submitted on 2016-07-18 06:59:23*

**Authors:** Florentin Smarandache

**Comments:** 2 Pages.

Où se trouve la faute sur les integrales?

**Category:** Algebra

[182] **viXra:1607.0160 [pdf]**
*submitted on 2016-07-13 11:02:35*

**Authors:** Johan Noldus

**Comments:** 5 Pages.

We engage in an approach towards integration theory divorced from
measure theory concentrating on the dierentiable functions instead of the
measurable ones. In a sense, we do for \measure theory" what dierential
geometry does for topology; the nal goal of this paper being the rigorous
denition of a generalization of the Feynman path integral. The approach
taken is an axiomatic one in which it is more important to understand
relationships between certain quantities rather than to calculate them
exactly. In a sense, this is how the eld of algebraic geometry is developed
in opposition to the study of partial dierential equations where in the
latter case, the stress is unfortunately still too much on the construction
of explicit solutions rather than on structural properties of and between
solutions.

**Category:** Algebra

[181] **viXra:1607.0075 [pdf]**
*submitted on 2016-07-06 23:42:10*

**Authors:** T.Nakashima

**Comments:** 1 Page.

Schanuel’s conjecture’s partial resolve

**Category:** Algebra

[180] **viXra:1606.0209 [pdf]**
*submitted on 2016-06-20 10:16:01*

**Authors:** Louai Hassan Elzein Basheir

**Comments:** 5 Pages.

This paper is prepared to show the mathematical derivation of the complex form of the law of cosines and show how it can help in the vector algebra.

**Category:** Algebra

[179] **viXra:1605.0306 [pdf]**
*submitted on 2016-05-30 15:53:54*

**Authors:** Bin Wang

**Comments:** 25 Pages. This is the second of three papers, all of which are posted on this site.

This paper includes two main chapters, \S 2 and \S3. Each deals with one type of algebraic Poincar\'e duality (APD) on
linear spaces originated from algebraic cycles. Two types of APD confirm the following conjectures:
(1) the Griffiths' conjecture on the incidence equivalence versus Abel-Jacobi equivalence.
(2) the standard conjectures including the ``D" conjecture over $\mathbb C$.

**Category:** Algebra

[178] **viXra:1605.0305 [pdf]**
*submitted on 2016-05-30 15:57:17*

**Authors:** Bin Wang

**Comments:** 27 Pages. This is the last of three papers, all of which are posted on this site.

This is the sequel of three papers. In this paper we apply algebraic Poincar\'e duality to
the maximal sub Hodge structures to show
(1) Generalized Hodge conjecture of level 1 is correct.
(2) The generalized Hodge conjecture of level 0, i.e. the usual Hodge conjecture, is correct.

**Category:** Algebra

[177] **viXra:1605.0302 [pdf]**
*submitted on 2016-05-30 15:49:46*

**Authors:** Bin Wang

**Comments:** 20 Pages. This is the first of three papers, all of which are posted on this site.

We discuss a structure that exists in many problems on smooth projective varieties over the field of complex numbers,
and name it as ``Algebraic Poincar\'e duality" or ``APD" for abbreviation.
In particular, over the complex numbers with singular cohomology, it is a solution to
(1) Griffiths' conjecture on the incidence equivalence versus Abel-Jacobi equivalence,
(2) Generalized Hodge conjecture of level 1,
(3) Generalized Hodge conjecture of level 0, i.e. the usual Hodge conjecture,
(4) The standard conjectures,
(5) Grothendieck's ``D" conjecture.
However it is not the goal of this paper to show APD implies these conjectures. In this paper we'll build the foundation for the structure by introducing the APD in its simplest form over the complex numbers.

**Category:** Algebra

[176] **viXra:1605.0139 [pdf]**
*submitted on 2016-05-13 12:00:15*

**Authors:** José de Jesús Camacho Medina

**Comments:** 13 Pages.

In the following document shows a particular form of simplify the root of a sum as the sum of roots, through an algebraic expression entitled: "Camacho Identity".

**Category:** Algebra

[175] **viXra:1605.0022 [pdf]**
*submitted on 2016-05-03 01:16:32*

**Authors:** W. B. Vasantha Kandasamy, Ilanthenral K, Florentin Smarandache

**Comments:** 257 Pages.

In this book authors for the first time define a special type of fixed points using MOD rectangular matrices as operators. In this case the special fixed points or limit cycles are pairs which
is arrived after a finite number of iterations. Such study is both new and innovative for it can find lots of applications in mathematical modeling.

**Category:** Algebra

[174] **viXra:1605.0021 [pdf]**
*submitted on 2016-05-03 01:17:45*

**Authors:** W. B. Vasantha Kandasamy, Ilanthenral K, Florentin Smarandache

**Comments:** 202 Pages.

In this book authors for the first time introduce a special type of fixed points using MOD square matrix operators. These special type of fixed points are different from the usual classical
fixed points.

**Category:** Algebra

[173] **viXra:1605.0013 [pdf]**
*submitted on 2016-05-02 05:34:51*

**Authors:** Yakov A. Iosilevskii

**Comments:** 34 Pages. An additional category is "Mathematics: Set Theory and Logic"

There are two presently common onamastic (onomatological) methods of logographically naming and thus concisely describing an algebraic system; both methods are often used simultaneously. According to one method, an algebraic system is equivocally denoted by an atomic logographic symbol that originally denotes a certain underlying set of elements, which is regarded as the principal one, while all other objects of the algebraic system, properly named, are kept in mind and are regarded as implicit properties of that set or of its separate elements. That is to say, according to this method, an algebraic system is its principal underlying set of elements together with all its properties, which are implied and are not mentioned explicitly. According to the other method, an algebraic system is regarded as an ordered multiple, whose coordinates properly denote the defining objects of the algebraic system, and consequently the ordered multiple name is equivocally used as a proper name of the algebraic system. Thus, in this case, the togetherness of all constituents of the algebraic system is expressed by the pertinent ordered multiple name in terms of its coordinate names. In my recent article available at http://viXra.org/abs/1604.0124¸ I have demonstrated that both above onomastic methods are inconsistent. Therefore, in that article and also in my earlier article appearing at http://arxiv.org/abs/1510.00328, I suggested and used another onomastic method of logographically naming the pertinent algebraic systems, namely that employing, as a name of an algebraic system, a complex logographic name the union of all explicit constituent sets of the system, namely, the underlying sets of elements, the surjective binary composition functions, and the bijective singulary inversion functions; a function is a set (class) of ordered pairs. In the present article, the latter onomastic method is substantiated and generalized in two respects. First, the set of explicit constituent sets of an algebraic system is now extended to include the injective choice, or selection, functions of all additive and multiplicative identity elements of the algebraic system, belonging to its underlying sets, so that all those elements are now mentioned by the logographic name of the system. A general definition of an algebraic system is elaborated in such a way so as to make the new onomastic method universally applicable to any algebraic system.

**Category:** Algebra

[172] **viXra:1604.0124 [pdf]**
*submitted on 2016-04-06 07:25:43*

**Authors:** Yakov A. Iosilevskii

**Comments:** 68 Pages.

A concise rigorous axiomatic algebraico-functional theory of a real affine Euclidean space of any given dimension n>=1 (nDRAfES), which is an underlying discipline of differential and integral calculus and particularly of my recent theory of nD wave fields, presented in arXiv:1510.00328, is developed from an algebraic system, called an affine additive group (AAG). The latter consists of a certain underlying set of points, called an affine additive group manifold (AAGM), and of a certain commutative [abstract] additive group (CAG), called the adjoint group of the AAG, whose elements, called vectors, are related to pairs of points of AAGM by a binary surjection, satisfying the appropriate version of the Chasle, or triangle, law. An AAG is illustrated by an nD primitive (Bravais) affine lattice. When the CAG is successively supplemented by the appropriate additional attributes to become ultimately an nD real abstract vector Euclidean space (nDRAbVES), the AAG is automatically self-adjusted to all current metamorphoses of its adjoint CAG to become ultimately an nDRAfES, of which the above nDRAbVES is adjoint. Relative to its any orthonormal basis, the nDRAbVES, adjoint of the nDRAfES, is isomorphic to the nD real arithmetical vector Euclidean space (nDRArVES), whose underlying set consists of ordered n-tuples of real numbers, being coordinates of the respective abstract vectors of the underlying vector set of the nDRAbVES. A time continuum (TC) is a special interpretation of 1DRAfES. A real-valued functional form (FF) that is initially defined on a certain region of the direct product (DP) of a 1DRAfES and a nDRAfES can rigorously be mapped onto a certain real-valued FF defined on a certain region of the DP of the TC and nDRArVES and vice versa.

**Category:** Algebra

[171] **viXra:1602.0067 [pdf]**
*submitted on 2016-02-06 02:37:55*

**Authors:** Pierre-Yves Gaillard

**Comments:** 191 Pages.

The purpose of this text is to make a few comments about the book "Categories and Sheaves" by Kashiwara and Schapira, Springer 2006.

**Category:** Algebra

[170] **viXra:1511.0267 [pdf]**
*submitted on 2015-11-27 16:20:45*

**Authors:** Józef Radomański

**Comments:** 17 Pages.

Paravectors just like integers have a ring structure. By introducing an integrated product we get geometric properties which make paravectors similar to vectors. The concepts of parallelism, perpendicularity and the angle are conceptually similar to vector counterparts, known from the Euclidean geometry. Paravectors meet the idea
of parallelogram law, Pythagorean theorem and many other properties well-known to everyone from school.

**Category:** Algebra

[169] **viXra:1511.0034 [pdf]**
*submitted on 2015-11-03 11:48:25*

**Authors:** W. B. Vasantha Kandasamy, K. Ilanthenral, Florentin Smarandache

**Comments:** 215 Pages.

Study of MOD planes happens to a very recent one. In this book, systematically algebraic structures on MOD planes like, MOD semigroups, MOD groups and MOD rings of different types are defined and studied. Such study is innovative for a large four quadrant planes are made into a small MOD planes. Several distinct features enjoyed by these MOD planes are defined, developed and described.

**Category:** Algebra

[168] **viXra:1511.0032 [pdf]**
*submitted on 2015-11-03 11:52:39*

**Authors:** W. B. Vasantha Kandasamy, K. Ilanthenral, Florentin Smarandache

**Comments:** 205 Pages.

In this book the notion of MOD functions are defined on MOD planes. This new concept of MOD functions behaves in a very different way. Even very simple functions like y = nx has several zeros in MOD planes where as they are nice single line graphs with only (0, 0) as the only zero. Further polynomials in MOD planes do not in general follows the usual or classical laws of differentiation or integration.

**Category:** Algebra

[167] **viXra:1509.0023 [pdf]**
*submitted on 2015-09-01 04:55:38*

**Authors:** Shahrezad Jasim Mohammed

**Comments:** 6 Pages.

In this paper, we define the concepts of a Q-Smarandache n-fold strong ideal and a Q-Smarandache fuzzy (strong, n-fold strong) ideal of a BH- algebra .Also, we study some properties of these fuzzy ideals.

**Category:** Algebra

[166] **viXra:1508.0331 [pdf]**
*submitted on 2015-08-31 06:20:44*

**Authors:** Octavian Cira

**Comments:** 23 Pages.

Let p and q two consecutive prime numbers, where q > p.

**Category:** Algebra

[165] **viXra:1508.0181 [pdf]**
*submitted on 2015-08-21 21:30:47*

**Authors:** Constantin Dumitrescu, Florentin Smarandache

**Comments:** 241 Pages.

In this book, we discuss a succession of methods encountered in the study of high school mathematical analysis to students and teachers, to higher education entry examination candidates, to all those interested, in order to allow them to reduce as many diverse problems as possible to already own work schemes.
We tried to present in a methodical manner, advantageous for the reader, the most frequent calculation methods encountered in the study of the mathematical analysis at this level.
{ First imprint: Metode de calcul în analiza matematică (in Romanian), INFOMED Publishing House, Craiova, Romania, 1995.}

**Category:** Algebra

[164] **viXra:1507.0148 [pdf]**
*submitted on 2015-07-19 17:54:56*

**Authors:** Ion Goian, Raisa Grigor, Vasile Marin, Florentin Smarandache

**Comments:** 144 Pages. Translation from Romanian to English by Ana Maria Buzoianu

In this book, you will find algebra exercises and problems, grouped by chapters, intended for higher grades in high schools or middle schools of general education. Its purpose is to facilitate training in mathematics for students in all high school categories, but can be equally helpful in a standalone workout. The book can also be used as an extracurricular source, as the reader shall find enclosed important theorems and formulas, standard definitions and notions that are not always included in school textbooks.

**Category:** Algebra

[163] **viXra:1507.0122 [pdf]**
*submitted on 2015-07-16 09:28:54*

**Authors:** Madad Khan, Florentin Smarandache, Saima Anis

**Comments:** 208 Pages.

An AG-groupoid is an algebraic structure that lies in between a groupoid
and a commutative semigroup. It has many characteristics similar to that of a
commutative semigroup. If we consider x^2y^2= y^2x^2, which holds for all x, y in a
commutative semigroup, on the other hand one can easily see that it holds in an
AG-groupoid with left identity e and in AG**-groupoids. This simply gives that
how an AG-groupoid has closed connections with commutative algebras.
We extend now for the first time the AG-Groupoid to the Neutrosophic
AG-Groupoid. A neutrosophic AG-groupoid is a neutrosophic algebraic
structure that lies between a neutrosophic groupoid and a neutrosophic
commutative semigroup.

**Category:** Algebra

[162] **viXra:1507.0089 [pdf]**
*submitted on 2015-07-13 11:51:55*

**Authors:** Richard J. Mathar

**Comments:** 102 Pages.

This is a table of all irreducible matrix representations of all 181 groups up to order 40,
generated with the GAP software.

**Category:** Algebra

[22] **viXra:1610.0118 [pdf]**
*replaced on 2017-05-02 16:15:55*

**Authors:** Ameet Sharma

**Comments:** 15 Pages.

We present notes on the Marcus-de Oliveira conjecture. The conjecture concerns the region in the complex plane covered by the determinants of the sums of two normal matrices with prescribed eigenvalues. Call this region ∆. Let ∆S be the restriction of ∆ to determinants of sums of symmetric normal matrices. This paper focuses on boundary matrices of ∆. We derive some properties of boundary matrices and boundary points. We conjecture that ∂∆ ⊆ ∂∆S. Speculations on how to prove this conjecture are given. We also present a second conjecture with regards to the form of normal matrices with magnitude symmetry. This paper builds on work in [1].

**Category:** Algebra

[21] **viXra:1610.0118 [pdf]**
*replaced on 2017-04-24 20:06:06*

**Authors:** Ameet Sharma

**Comments:** 15 Pages.

We present notes on the Marcus-de Oliveira conjecture. The conjecture concerns the region in the complex plane covered by the determinants of the sums of two normal matrices with prescribed eigenvalues. Call this region ∆. Let ∆S be the restriction of ∆ to determinants of sums of symmetric normal matrices. This paper focuses on boundary matrices of ∆. We derive some properties of boundary matrices and boundary points. We conjecture that ∂∆ ⊆ ∂∆S. Speculations on how to prove this conjecture are given. We also present a second conjecture with regards to the form of normal matrices with magnitude symmetry. This paper builds on work in [1].

**Category:** Algebra

[20] **viXra:1610.0118 [pdf]**
*replaced on 2017-04-13 15:18:44*

**Authors:** Ameet Sharma

**Comments:** 15 Pages.

We present notes on the Marcus-de Oliveira conjecture. The conjecture concerns the region in the complex plane covered by the determinants of the sums of two normal matrices with prescribed eigenvalues. Call this region ∆. Let ∆S be the restriction of ∆ to determinants of sums of symmetric normal matrices. This paper focuses on boundary matrices of ∆. We derive some properties of boundary matrices and boundary points. We
conjecture that ∂∆ ⊆ ∂∆S. Speculations on how to prove this conjecture are given. We also present a second conjecture with regards to the form of normal matrices with magnitude symmetry. This paper builds on work in [1].

**Category:** Algebra

[19] **viXra:1610.0118 [pdf]**
*replaced on 2017-02-28 03:28:22*

**Authors:** Ameet Sharma

**Comments:** 13 Pages.

We present notes on the Marcus-de Oliveira conjecture. The conjecture concerns the region in the complex plane covered by the determinants
of the sums of two normal matrices with prescribed eigenvalues. Call this region ∆. Let ∆S be the restriction of ∆ to determinants of sums of symmetric normal matrices. In this paper, we conjecture that ∆S has the same boundary as ∆. We prove the conjecture under the restriction that at least one of the two matrices has distinct eigenvalues. If this conjecture is true then proving the Marcus-de Oliveira conjecture
for symmetric normal matrices would prove it for the general case. This paper builds on work in [1].

**Category:** Algebra

[18] **viXra:1609.0262 [pdf]**
*replaced on 2016-11-06 01:57:56*

**Authors:** Eli Halylaurin

**Comments:** 4 Pages. This document is french written.

You will find here an attempt to demonstrate a general structure theorem for abelian groups (finite or infinite). Such a theorem already exists in the finite case, but the infinite case does not seem to have been deeply studied. This is what it is proposed to do in this document. To achieve this task, Zorn lemma will be used. We will try to prove each abelian group can be seen as included, modulo isomorphism, in a direct product of groups that can be represented upon a circle or a line.

**Category:** Algebra

[17] **viXra:1609.0262 [pdf]**
*replaced on 2016-10-21 13:25:57*

**Authors:** Eli Halylaurin

**Comments:** 4 Pages. This document is french written.

You will find here an attempt to demonstrate a general structure theorem for abelian groups (finite or infinite). Such a theorem already exists in the finite case, but the infinite case does not seem to have been deeply studied. This is what it is proposed to do in this document. To achieve this task, Zorn lemma will be used. We will try to prove each abelian group can be seen as included, modulo isomorphism, in a direct product of groups that can be represented upon a circle or a line.

**Category:** Algebra

[16] **viXra:1604.0124 [pdf]**
*replaced on 2016-05-02 05:47:55*

**Authors:** Yakov A. Iosilevskii

**Comments:** 68 Pages.

A concise rigorous axiomatic algebraico-functional theory of a real affine Euclidean space of any given dimension n>=1 (nDRAfES), which is an underlying discipline of differential and integral calculus and particularly of my recent theory of nD wave fields, presented in arXiv:1510.00328, is developed from an algebraic system, called an affine additive group (AAG). The latter consists of a certain underlying set of points, called an affine additive group manifold (AAGM), and of a certain commutative [abstract] additive group (CAG), called the adjoint group of the AAG, whose elements, called vectors, are related to pairs of points of AAGM by a binary surjection, satisfying the appropriate version of the Chasle, or triangle, law. An AAG is illustrated by an nD primitive (Bravais) affine lattice. When the CAG is successively supplemented by the appropriate additional attributes to become ultimately an nD real abstract vector Euclidean space (nDRAbVES), the AAG is automatically self-adjusted to all current metamorphoses of its adjoint CAG to become ultimately an nDRAfES, of which the above nDRAbVES is adjoint. Relative to its any orthonormal basis, the nDRAbVES, adjoint of the nDRAfES, is isomorphic to the nD real arithmetical vector Euclidean space (nDRArVES), whose underlying set consists of ordered n-tuples of real numbers, being coordinates of the respective abstract vectors of the underlying vector set of the nDRAbVES. A time continuum (TC) is a special interpretation of 1DRAfES. A real-valued functional form (FF) that is initially defined on a certain region of the direct product (DP) of a 1DRAfES and a nDRAfES can rigorously be mapped onto a certain real-valued FF defined on a certain region of the DP of the TC and nDRArVES and vice versa.

**Category:** Algebra

[15] **viXra:1506.0145 [pdf]**
*replaced on 2015-07-08 13:53:53*

**Authors:** Jaykov Foukzon

**Comments:** 52 Pages.

In this paper the important applications of the Dedekind completion *R_d in transcendental number theory is considered. Given any analytic function of one complex variable f ∈Q[[z]],we investigate the arithmetic nature of the values of f(z) at transcendental points e^n. Main results are: (i) the both numbers e+pi and e-pi are irrational, (ii) number e^e are transcendental

**Category:** Algebra