English
Related papers

Related papers: On a numerical upper bound for the extended Goldba…

200 papers

This paper presents some considerations about the Goldbach's conjecture (GC). The work is based on elementary results of the number theory and it provides a constructive method that permits, given an even integer, to find at least a pair of…

General Mathematics · Mathematics 2013-12-13 Ciro D'Urso

In the present work we investigate the largest possible gaps between consecutive numbers which can be written as the difference of two primes. The best known upper bounds are the same as those concerning the largest possible difference of…

Number Theory · Mathematics 2012-06-04 Janos Pintz

According to Goldbach conjecture, any even number can be broken up as the sum of two prime numbers : $n = p + q$. We construct a network where each node is a prime number and corresponding to every even number $n$, we put a link between the…

Number Theory · Mathematics 2009-11-11 Anjan Kumar Chandra , Subinay Dasgupta

The ternary Goldbach conjecture states that every odd number $m \geqslant 7$ can be written as the sum of three primes. We construct a set of primes $\mathbb{P}$ defined by an expanding system of admissible congruences such that almost all…

Number Theory · Mathematics 2024-09-16 Debmalya Basak , Raghavendra N. Bhat , Anji Dong , Alexandru Zaharescu

We prove new results on the additive theory of reversed primes $\overleftarrow{p}$; that is, primes $p$ which are written backwards in a fixed base $b\geq 2$. In particular, we study a variant of Goldbach's conjecture, looking at…

Number Theory · Mathematics 2026-05-22 Michael Harm , Daniel R. Johnston

The ternary Goldbach conjecture states that every odd number n>=7 is the sum of three primes. The estimation of sums of the form \sum_{p\leq x} e(\alpha p), \alpha = a/q + O(1/q^2), has been a central part of the main approach to the…

Number Theory · Mathematics 2013-12-31 H. A. Helfgott

"Goldbach's Conjecture" proven by analysis of how all combinations of the odd primes, summed in pairs, generates all of the even numbers.

General Mathematics · Mathematics 2007-05-23 Roger Ellman

The ternary Goldbach conjecture states that every odd number $n\geq 7$ is the sum of three primes. The estimation of the Fourier series $\sum_{p\leq x} e(\alpha p)$ and related sums has been central to the study of the problem since Hardy…

Number Theory · Mathematics 2014-04-15 H. A. Helfgott

We prove that there exists a k_0>0 such that every sufficiently large odd integer n with 3\mid n can be represented as p_1+p_2+p_3, where p_1,p_2 are Chen's primes and p_3 is a prime with p_3+2 has at most k_0 prime factors.

Number Theory · Mathematics 2008-12-25 Hongze Li , Hao Pan

Let $\mathcal{P}_r$ denote an almost-prime with at most $r$ prime factors, counted according to multiplicity. In this paper, it is proved that for every sufficiently large even integer $N$, the equation \begin{equation*}…

Number Theory · Mathematics 2018-01-03 Jinjiang Li , Min Zhang

This paper expands and improves on the general Sieve method. This expaned and improved Sieve is applied to Goldbach's problem. A new estimate of the exception set in Goldbach's number E(X), an improved lower bound D_{1,2}(N) and upper bound…

Number Theory · Mathematics 2009-04-23 Cheng Hui Ren

n 1937 Ivan Vinogradov proved the three prime sum version of the Goldbach Conjecture, often called the weak form of Goldbach Conjecture. And that it holds for "sufficiently large" odd natural numbers. In this work we use Dirichlet Theorem,…

General Mathematics · Mathematics 2021-12-21 Uboho Unyah

Assuming the Riemann Hypothesis, we prove that for all $x\geq 2$, there exists at least one even integer within the interval $(x, x+123\log^2x]$, that can be expressed as the sum of two primes. This result is an improvement over the recent…

Number Theory · Mathematics 2025-12-30 Andrés Chirre , Markus Valås Hagen

We show that every even number $>\exp\exp 36$ can be represented as the sum of a prime and a product of at most two primes.

Number Theory · Mathematics 2015-12-18 Tomohiro Yamada

We approach a new proof of the strong Goldbach's conjecture for sufficiently large even integers by applying the Dirichlet's series. Using the Perron formula and the Residue Theorem in complex variable integration, one could show that any…

General Mathematics · Mathematics 2017-11-07 Ahmad Sabihi

Drawing inspiration from the work of Nathanson and Yamada we prove that every even integer larger than $\exp (\exp (32.7))$ can be written as the sum of a prime and the product of at most two primes.

Number Theory · Mathematics 2025-06-26 Matteo Bordignon , Daniel R. Johnston , Valeriia Starichkova

We consider the Linnik--Goldbach problem of writing all large even integers as the sum of two primes and a fixed number of powers of 2. We show that, under the generalised Riemann hypothesis, one can use 6 powers of two. In addition, we…

Number Theory · Mathematics 2026-05-19 Daniel R. Johnston , Tim Trudgian

We investigate progressions in the set of pairs of integers $\mathbb{Z}^2$ and define a generalisation of the Jacobsthal function. For this function, we conjecture a specific upper bound and prove that this bound would be a sufficient…

Number Theory · Mathematics 2017-06-02 Mario Ziller , John F. Morack

We estimate the selection constant in the following geometric selection theorem by Pach: For every positive integer $d$ there is a constant $c_d > 0$ such that whenever $X_1,..., X_{d+1}$ are $n$-element subsets of $\mathbb{R}^d$, then we…

Metric Geometry · Mathematics 2015-10-20 Roman Karasev , Jan Kynčl , Pavel Paták , Zuzana Patáková , Martin Tancer

In the present paper we prove that under the assumption of the GRH (Generalized Riemann Hypothesis) each sufficiently large odd integer can be expressed as the sum of a prime and two isolated primes.

Number Theory · Mathematics 2016-06-14 Helmut Maier , Michael Th. Rassias