# Number Theory

## 1412 Submissions

 viXra:1412.0273 [pdf] submitted on 2014-12-30 14:23:47

### Verification of Collatz Conjecture for a Positive Integer Px, Where P is Any Prime Number and X is an Odd Integer Derived Using Fermat’s Little Theorem Which is Specific for Each Prime

Authors: Prashanth R. Rao

Collatz conjecture states that starting with any positive integer n, we divide it by 2 if it is even or multiply it by 3 and add 1 if it is odd and repeat this algorithm on the answer always using the same odd or even rule, we will ultimately end up with an answer of 1. Here we prove this conjecture for a special integer which is the product of any prime number “p” greater than three with another positive odd integer “x” that has been derived by using the Fermat’s little theorem and is therefore unique for each prime. Thus we prove Collatz’s conjecture for a small fraction of positive integers “px” which would be expected to roughly represent the same proportion of integers as prime numbers.
Category: Number Theory

 viXra:1412.0250 [pdf] submitted on 2014-12-27 04:44:46

### On the Cubic Combination and the Third Degree Ramanujan Identities

Authors: Nicolae Bratu, Adina Cretan

The present paper is a fragment revised from the work , published only in Romanian. Using a new function, “cubic combination”, we can solve different problems. The novelty of this work consists in the deduction of an infinite number of third degree Ramanujan identities.
Category: Number Theory

 viXra:1412.0248 [pdf] submitted on 2014-12-27 05:22:19

### On the FERMAT’S Last Theorem. a New Proof for the Cases N-3 and N-5

Authors: Nicolae Bratu

In the work “Disquisitiones Diophanticae”, published in 2006 in Romanian, I had gathered succinctly and schematized the content of the “Memorandum to the Romanian Academy” in 1983, concerning the Fermat’s Last Theorem. This paper demonstrates a lemma representing a completion of the algebraic method proposed by us to prove the Fermat’s Theorem.
Category: Number Theory

 viXra:1412.0246 [pdf] submitted on 2014-12-26 16:11:05

### On the Quaternary Quadratic Diophantine Equations

Authors: Nicolae BRATU, Adina CRETAN

This paper has been updated and completed thanks to suggestions and critics coming from Dr. Mike Hirschhorn, from the University of New South Walles. We want to express our highest gratitude. The paper appeared in an abbreviated form . The present work is a complete form. For the homogeneous diophantine equations:x2 + by2 + cz2 = w2 there are solutions in the literature only for particular values of the parameters b and c. These solutions were found by Euler, Carmichael, Mordell. They proposed a particular solution for this equation in . This paper presents the general solution of this equation as functions of the rational parameters b, c and their divisors. As a consequence, we obtain the theorem that every positive integer can be represented as the sum of three squares, with at most one of them duplicated, which improves on the Fermat –Lagrange theorem
Category: Number Theory

 viXra:1412.0236 [pdf] submitted on 2014-12-25 04:38:19

### Compositeness Test for N=2*3^n-1

Authors: Predrag Terzic

Conjectured polynomial time compositeness test for numbers of the form 2*3^n-1 is introduced .
Category: Number Theory

 viXra:1412.0228 [pdf] submitted on 2014-12-24 01:42:47

### A Formula Based on the Lesser Prime P from a Pair of Twin Primes that Produces Semiprimes qr Such that P is Equal to R-Q+1

Authors: Marius Coman

In this paper I make an observation about an interesting formula based on the lesser prime p from a pair of twin primes, id est N = p^3 + 3*p^2 + 4*p + 1, that conducts sometimes to the result N = q*r, where q, r are primes such that r – q + 1 = p and sometimes to the result N = q*r, where at least one from q, r or both are composites such that r – q + 1 = p.
Category: Number Theory

 viXra:1412.0223 [pdf] replaced on 2015-01-02 23:09:53

### A Note on the Harmonic Series and the Logarithm

Authors: Martin Schlueter

An (assumed) new relationship between the harmonic series \$H_{n}\$ and the natural logarithm \$log(n)\$ is presented.
Category: Number Theory

 viXra:1412.0178 [pdf] submitted on 2014-12-15 05:30:02

### Trigonometrical Form of Zeta-Function for Negative (N) with Proof for Riemann Hypothesis.

Authors: Grzegorz Ileczko

The Riemann hypothesis is not proved by more, than 150 years. At this paper, I presented new solution for this problem. I found new trigonometrical form of Riemann's zeta function for negative numbers (n). This new form of zeta gives opportunity to prove the Riemann hypothesis. Presented proof isn’t complicated for trigonometrical form of zeta function.
Category: Number Theory

 viXra:1412.0164 [pdf] submitted on 2014-12-11 15:54:12

### Rebuttal of Paper by Matthias Lesch, 13 September 2014, Vixra

Authors: Stephen Marshall

This paper presents a complete rebuttal of the paper Vixra 1408.0195v2 posted by Matthias Lesch on 13 September 2014. This rebuttal is in response to Vixra 1408.0195v2 where Matthias Lesch erroneously attempted to disprove six papers I published proving several conjectures in Number Theory. Specifically, these were papers Vixra:1408.0169, 1408.0174, 1408.0201, 1408.0209, and 1408.0212. This rebuttal paper is presented in the same format as Vixra 1408.0195v2 with necessary quotes from paper Vixra 1408.0195v2 to clarify rebuttals.
Category: Number Theory

 viXra:1412.0150 [pdf] replaced on 2015-04-08 05:00:13

### The Mar Reduced Form of a Natural Number

Authors: Marius Coman

In this book I define a function which allows the reduction to any non-null positive integer to one of the digits 1, 2, 3, 4, 5, 6, 7, 8 or 9. The utility of this enterprise is well-known in arithmetic; the function defined here differs apparently insignificant but perhaps essentially from the function modulo 9 in that is not defined on 0, also can’t have the value 0; essentially, the mar reduced form of a non-null positive integer is the digital root of this number but with the important distinction that is defined as a function such it can be easily used in various applications (divizibility problems, Diophantine equations), a function defined only on the operations of addition and multiplication not on the operations of subtraction and division. Some of the results obtained with this tool are a proof of Fermat’s last Theorem, cases n = 3 and n = 4, using just integers, no complex numbers and a Diophantine analysis of perfect numbers. Note: I understand, in this book, the numbers denoted by “abc” as the numbers where a, b, c are digits, and the numbers denoted by “a*b*c” as the products of the numbers a, b, c.
Category: Number Theory

 viXra:1412.0136 [pdf] submitted on 2014-12-07 03:30:07

### A Proof of Strong Goldbach Conjecture and Twin Prime Conjecture

Authors: Pingyuan Zhou
Comments: 16 Pages. This paper has been submitted to mathematical journal.

In this paper we give a proof of the strong Goldbach conjecture by studying limit status of original continuous Goldbach natural number sequence generated by original continuous odd prime number sequence. It implies the weak Goldbach conjecture. If a prime p is defined as Goldbach prime when GNL = p then Goldbach prime is the higher member of a twin prime pair, from which we will give a proof of the twin prime conjecture.
Category: Number Theory

 viXra:1412.0124 [pdf] submitted on 2014-12-06 03:01:39

### Sieve of Prime Numbers and Testing their Using Algorithms

Authors: Barar Stelian Liviu

This paper is protected by copiryght from 16.07.2012 I want to present the paper tu the viXra .
Category: Number Theory

 viXra:1412.0046 [pdf] submitted on 2014-12-03 04:34:06

### Two Conjectures on Sequences of Primes Obtained from the Lesser Term from a Pair of Twin Primes

Authors: Marius Coman

In this paper I make two conjectures about two types of possible infinite sequences of primes obtained starting from any given prime which is the lesser term from a pair of twin primes for a possible infinite of positive integers which are not of the form 3*k – 1 respectively starting from any given positive integer which is not of the form 3*k - 1 for a possible infinite of lesser terms from pairs of twin primes.
Category: Number Theory

 viXra:1412.0044 [pdf] submitted on 2014-12-02 22:18:18

### A Proof of the Beal’s Conjecture (After Fourth Modification)

Authors: Zhang Tianshu

First, we classify A, B and C according to their respective odevity, and ret rid of two kinds from AX+BY=CZ. Then, affirm AX+BY=CZ such being the case A, B and C have a common prime factor by concrete examples. After that, prove AX+BY≠CZ such being the case A, B and C have not any common prime factor by the mathematical induction with the aid of the symmetric law of odd numbers after the decomposition of the inequality. Finally, reached such a conclusion that the Beal’s conjecture can hold water after the comparison between AX+BY=CZ and AX+BY≠CZ under the given requirements.
Category: Number Theory

 viXra:1412.0042 [pdf] submitted on 2014-12-03 02:29:23

### Eight Conjectures on Chameleonic Numbers Involving a Formula Based on the Multiples of 30

Authors: Marius Coman

In this paper I make eight conjectures about a type of numbers which I defined in a previous paper, “The notion of chameleonic numbers, a set of composites that «hide» in their inner structure an easy way to obtain primes”, in the following way: the non-null positive composite squarefree integer C not divisible by 2, 3 or 5 is such a number if the absolute value of the number P – d + 1 is always a prime or a power of a prime, where d is one of the prime factors of C and P is the product of all prime factors of C but d.
Category: Number Theory

 viXra:1412.0041 [pdf] replaced on 2014-12-03 08:13:58

### Lucasian Primality Criterion for Specific Class of K*2^n-1

Authors: Predrag Terzic

Conjectured polynomial time primality test for specific class of numbers of the form k*2^n-1 is introduced .
Category: Number Theory

 viXra:1412.0039 [pdf] submitted on 2014-12-02 12:33:58

### Eight Conjectures on a Certain Type of Semiprimes Involving a Formula Based on the Multiples of 30

Authors: Marius Coman