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Romanov proved that a positive proportion of the integers have a representation as a sum of a prime and a power of an arbitrary fixed positive integer. Rieger proved the analogous result for number fields. We will determine an explicit…

Number Theory · Mathematics 2018-01-09 Manfred G. Madritsch , Stefan Planitzer

The author gives nontrivial upper and lower bounds for the number of primes in the interval $[x - x^{\theta}, x]$ for some $0.52 \leqslant \theta \leqslant 0.525$, showing that the interval $[x - x^{0.52}, x]$ contains prime numbers for all…

Number Theory · Mathematics 2025-10-17 Runbo Li

We obtain a Burgess-type bound for character sums over unions of intervals. The result follows from the argument of Heath-Brown, with an improvement in one of the steps.

Number Theory · Mathematics 2013-02-05 Xuancheng Shao

After certain subsets of Natural numbers called Range and Row are defined, we assume (1) there is a function that can produce prime numbers and (2) each even number greater than 2, like A, can be represented as the sum of n prime numbers.…

General Mathematics · Mathematics 2007-05-23 Reza Javaherdashti

We obtain new results about the representation of almost all residues modulo a prime $p$ by a product of a small integer and also an element of small multiplicative subgroup of $({\mathbb Z}/p{\mathbb Z})^*$. These results are based on some…

Number Theory · Mathematics 2014-12-09 Marc Munsch , Igor Shparlinski

Let $\delta > 1/2$. We prove that if $A$ is a subset of the primes such that the relative density of $A$ in every reduced residue class is at least $\delta$, then almost all even integers can be written as the sum of two primes in $A$. The…

Number Theory · Mathematics 2024-09-20 Ali Alsetri , Xuancheng Shao

In this note, we propose simple summations for primes, which involve two finite nested sums and Bernoulli numbers. The summations can also be expressed in terms of Bernoulli polynomials.

History and Overview · Mathematics 2023-03-20 Jean-Christophe Pain

The main results extend to sums over primes in a short interval earlier estimates by the author for "long" Weyl sums over primes.

Number Theory · Mathematics 2011-12-02 Angel V. Kumchev

We answer the question positively. In fact, we believe to have proved that every even integer $2N\geq3\times10^{6}$ is the sum of two odd distinct primes. Numerical calculations extend this result for $2N$ in the range $8-3\times10^{6}$.…

General Mathematics · Mathematics 2017-10-12 Paolo Starni

We give an asymptotic formula for the mean value of the number of representations of an integer as sum of two squares known as the Gauss circle problem.

General Mathematics · Mathematics 2023-05-09 Nikolaos D. Bagis

In this article, we prove an "equivalence" between two higher even moments of primes in short intervals under Riemann Hypothesis. We also provide numerical evidence in support of these asymptotic formulas.

Number Theory · Mathematics 2007-05-23 Tsz Ho Chan

We give two improved explicit versions of the prime number theorem for primes in arithmetic progression: the first isolating the contribution of the Siegel zero and the second completely explicit, where the improvement is for medium-sized…

Number Theory · Mathematics 2021-01-22 Matteo Bordignon

We show that every $N \geq 2$ can be written as the sum of positive integers $a$ and $b$ where $\Omega(ab) \leq 40$. The result is obtained through the direct application of an explicit lower bound Selberg sieve along with some computation…

Number Theory · Mathematics 2026-05-12 Adrian Dudek , Lachlan Dunn

This note discusses the existence of prime numbers in short intervals. An unconditional elementary argument seems to prove the existence of primes in the short intervals [x, x + y], where y >= x^(1/2)(log x)^e, e > 0, and a sufficiently…

General Mathematics · Mathematics 2009-01-07 N. A. Carella

The set of short intervals between consecutive primes squared has the pleasant---but seemingly unexploited---property that each interval $s_k:=\{p_k^2, \dots,p_{k+1}^2-1\}$ is fully sieved by the $k$ first primes. Here we take advantage of…

Number Theory · Mathematics 2014-08-13 Kolbjørn Tunstrøm

In this note, we generalise two results on prime numbers in short intervals. The first result is Ingham's theorem which connects the zero-density estimates with short intervals where the prime number theorem holds, and the second result is…

Number Theory · Mathematics 2024-11-05 Valeriia Starichkova

We give a large sieve type inequality for functions supported on primes. As application we prove a conjecture by Elliott, and give bounds for short character sums over primes. The proves uses a combination of the large sieve and the Selberg…

Number Theory · Mathematics 2011-05-10 Jan-Christoph Schlage-Puchta

First we generalize a famous lemma of Gallagher on the mean square estimate for exponential sums by plugging a weight in the right hand side of Gallagher's original inequality. Then we apply it in the special case of the Cesaro weight, in…

Number Theory · Mathematics 2016-04-21 Giovanni Coppola , Maurizio Laporta

We examine the prime gaps using a statistical approach. It is first shown that the Andrica's conjecture is true for half or more cases. Using the arguments of averages, it is further shown that Andrica's conjecture is true. We further…

General Mathematics · Mathematics 2017-03-01 Sameen Ahmed Khan

We study pairs of consecutive odd numbers through a straightforward indexing. We focus in particular on twin primes and their distribution. With a counting argument, we calculate the limit of an alternating sum that is equal to 1 which…

General Mathematics · Mathematics 2021-06-08 Marc Wolf , FranÇOis Wolf , FranÇOis-Xavier Villemin
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