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We prove that suitable asymptotic formulae in short intervals hold for the problems of representing an integer as a sum of a prime square and a square, or a prime square. Such results are obtained both assuming the Riemann Hypothesis and in…

Number Theory · Mathematics 2017-01-03 Alessandro Languasco , Alessandro Zaccagnini

We improve some results about the asymptotic formulae in short intervals for the average number of representations of integers of the forms $n=p_{1}^{\ell_1}+p_{2}^{\ell_2}$ and $n=p^{\ell_1} + m^{\ell_2}$, where $\ell_1, \ell_2\ge 2$ are…

Number Theory · Mathematics 2020-12-08 Alessandro Languasco , Alessandro Zaccagnini

We prove results about the asymptotic formulae in short intervals for the average number of representations of integers of the forms $n=p_{1}^{\ell_1}+p_{2}^{\ell_2}$, with $\ell_1, \ell_2\in\{2,3\}$, $\ell_1+\ell_2\le 5$ are fixed…

Number Theory · Mathematics 2019-08-21 Alessandro Languasco , Alessandro Zaccagnini

Let $k\ge 1$ be an integer. We prove that a suitable asymptotic formula for the average number of representations of integers $n=p_{1}^{k}+p_{2}^{2}+p_{3}^{2}$, where $p_1,p_2,p_3$ are prime numbers, holds in intervals shorter than the ones…

Number Theory · Mathematics 2021-06-04 Alessandro Languasco , Alessandro Zaccagnini

Let $R_{m, \mathrm{sq-full}}(N)$ be a representation function for the sum of a prime and a square-full number. In this article, we prove an asymptotic formula for the sum of $R_{m, \mathrm{sq-full}}(N)$ over positive integers $N$ in a short…

Number Theory · Mathematics 2024-05-08 Fumi Ogihara , Yuta Suzuki

We prove that a suitable asymptotic formula for the average number of representations of integers $n=p_{1}^{3}+p_{2}^{3}+p_{3}^{3}+p_{4}^{3}$, where $p_1,p_2,p_3,p_4$ are prime numbers, holds in intervals shorter than the the ones…

Number Theory · Mathematics 2019-09-16 Alessandro Languasco , Alessandro Zaccagnini

Assuming the Riemann Hypothesis we prove that the interval $[N, N + H]$ contains an integer which is a sum of a prime and two squares of primes provided that $H \ge C (\log N)^{4}$, where $C > 0$ is an effective constant.

Number Theory · Mathematics 2016-06-07 Alessandro Languasco , Alessandro Zaccagnini

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

Let $R(N)$ be the number of representations of $N$ as a sum of a prime and a square-full number weighted with logarithmic function. In $2024$, the author and Y. Suzuki obtained an asymptotic formula for the sum of $R(N)$ over positive…

Number Theory · Mathematics 2025-06-06 Fumi Ogihara

In this paper, we shall establish a rather general asymptotic formula in short intervals for a classe of arithmetic functions and announce two applications about the distribution of divisors of square-full numbers and integers representable…

Number Theory · Mathematics 2018-07-25 Jie Wu , Qiang Wu

The variance of primes in short intervals relates to the Riemann Hypothesis, Montgomery's Pair Correlation Conjecture and the Hardy--Littlewood Conjecture. In regards to its asymptotics, very little is known unconditionally. We study the…

Number Theory · Mathematics 2024-10-31 Ofir Gorodetsky

We continue investigations on the average number of representations of a large positive integer as a sum of given powers of prime numbers. The average is taken over a short interval, whose admissible length depends on whether or not we…

Number Theory · Mathematics 2020-12-08 Marco Cantarini , Alessandro Gambini , Alessandro Zaccagnini

We furnish an explicit bound for the prime number theorem in short intervals on the assumption of the Riemann hypothesis.

Number Theory · Mathematics 2022-04-18 Michaela Cully-Hugill , Adrian W. Dudek

Under the assumption of the Riemann Hypothesis (RH), we prove explicit quantitative relations between hypothetical error terms in the asymptotic formulae for truncated mean-square average of exponential sums over primes and in the…

Number Theory · Mathematics 2017-05-12 Alessandro Languasco , Alessandro Zaccagnini

We prove the analog of Cram\'er's short intervals theorem for primes in arithmetic progressions and prime ideals, under the relevant Riemann Hypothesis. Both results are uniform in the data of the underlying structure. Our approach is based…

Number Theory · Mathematics 2017-02-15 L. Grenié , G. Molteni , A. Perelli

The aim of this work is to illustrate a conditional result involving the exponential sums over primes in short intervals under the assumption that both the Generalized Riemann Hypothesis and the Density Hypothesis for Dirichlet…

Number Theory · Mathematics 2023-12-11 Chiara Bellotti , Giuseppe Puglisi

Using recent results from the theory of integer points close to smooth curves, we give an asymptotic formula for the distribution of values of a class of integer-valued prime-independent multiplicative functions.

Number Theory · Mathematics 2016-09-12 Olivier Bordellès

Let $s$, $\ell$ be two integers such that $2\le s\le \ell-1$, $\ell\ge 3$. We prove that a suitable asymptotic formula for the average number of representations of integers $n=\sum_{i=1}^{s} p_{i}^{\ell}$, where $p_i$, $i=1,\dotsc,s$, are…

Number Theory · Mathematics 2019-01-23 Alessandro Languasco

Let $\mathbf H_2$ denote the set of even integers $n \not\equiv 1 \pmod 3$. We prove that when $H \ge X^{0.33}$, almost all integers $n \in \mathbf H_2$, $X < n \le X + H$ can be represented as the sum of a prime and the square of a prime.…

Number Theory · Mathematics 2010-08-23 A. V. Kumchev , J. Y. Liu

A number is said to be $y$-smooth if all of its prime factors are less than or equal to $y.$ For all $17/30<\theta\leq 1,$ we show that the density of $y$-smooth numbers in the short interval $[x,x+x^{\theta}]$ is asymptotically equal to…

Number Theory · Mathematics 2024-09-10 Khalid Younis
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