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Let $c > 1$ and $0 < \gamma < 1$ be real, with $c \notin \mathbb N$. We study the solubility of the Diophantine inequality \[ \left| p_1^c + p_2^c + \dots + p_s^c - N \right| < \varepsilon \] in Piatetski-Shapiro primes $p_1, p_2, \dots,…

Number Theory · Mathematics 2018-03-13 Angel Kumchev , Zhivko Petrov

Let $A\subset \N_{+}$ and by $P_{A}(n)$ denotes the number of partitions of an integer $n$ into parts from the set $A$. The aim of this paper is to prove several result concerning the existence of integer solutions of Diophantine equations…

Number Theory · Mathematics 2021-09-27 Szabolcs Tengely , Maciej Ulas

We derive a priori estimates for second order derivatives of solutions to a wide calss of fully nonlinear elliptic equations on Riemannian manifolds. The equations we consider naturally appear in geometric problems and other applications…

Analysis of PDEs · Mathematics 2014-01-30 Bo Guan , Heming Jiao

Dirichlet's theorem on arithmetic progressions called as Dirichlet prime number theorem is a classical result in number theory. Atle Selberg\cite{Selberg} gave an elementary proof of this theorem. In this article we give an alternative…

Number Theory · Mathematics 2017-05-17 Haifeng Xu

We consider several inverse problems for elliptic equations whose coefficients are random, without imposing a special probabilistic structure on the randomness. The main body treats the Schr\"odinger equation. We compare what can be…

Analysis of PDEs · Mathematics 2026-05-25 Cătălin I. Cârstea

We derived the sum identities for generalized harmonic and corresponding oscillatory numbers for which a sieve procedure can be applied. The obtained results enable us to understand better the properties of these numbers and their…

Number Theory · Mathematics 2007-09-24 R. M. Abrarov , S. M. Abrarov

Let k => 1, m => 1 be small fixed integers, gcd(k, m) = 1. This note develops some techniques for proving the existence of infinitely many primes solutions x = p, and y = q of the linear Diophantine equation y = mx + k.

General Mathematics · Mathematics 2014-04-04 N. A. Carella

We prove a variant of Sch'nol's theorem in a general setting: for generators of strongly local Dirichlet forms perturbed by measures. As an application, we discuss quantum graphs with $\delta$- or Kirchhoff boundary conditions.

Spectral Theory · Mathematics 2007-08-13 Anne Boutet de Monvel , Daniel Lenz , Peter Stollmann

In this paper, we study a mixed variational problem subject to perturbations, where the noise term is modelled by means of a bilinear form that has to be understood to be "small" in some sense. Indeed, we consider a family of such problems…

Numerical Analysis · Mathematics 2020-08-26 A. I. Garralda-Guillem , H. Kunze , D. La Torre , M. Ruiz Galan

This survey paper is not a complete reference guide to number-theoretical applications of ergodic theory. Instead, it considers an approach to a class of problems involving Diophantine properties of $n$-tuples of real numbers, namely,…

Dynamical Systems · Mathematics 2007-05-23 Dmitry Kleinbock

We develop machinery to explicitly determine, in many instances, when the difference $x^2-y^n$ is divisible only by powers of a given fixed prime. This combines a wide variety of techniques from Diophantine approximation (bounds for linear…

Number Theory · Mathematics 2023-09-20 Michael A. Bennett , S. Siksek

We consider nonlinear elliptic problems involving a nonlocal operator: the square root of the Laplacian in a bounded domain with zero Dirichlet boundary conditions. For positive solutions to problems with power nonlinearities, we establish…

Analysis of PDEs · Mathematics 2009-05-11 Xavier Cabre , Jinggang Tan

In this paper, we prove some new thickness theorems with partial derivatives. We give some applications. First, we give a simple criterion that can judge whether two scaled Cantor sets have non-empty intersection. Second, we prove under…

Dynamical Systems · Mathematics 2022-12-02 Kan Jiang

A prime geodesic theorem is proven for singular geodesics in quotients of SL(4). This is a case where regularity assumptions of previous papers fail. As a consequence, the analysis becomes much more involved. For applications in number…

Differential Geometry · Mathematics 2007-05-23 Anton Deitmar , Mark Pavey

In this paper we are concerned with a Gordan-type theorem involving an arbitrary number of inequality functions. We not only state its validity under a weak convexity assumption on the functions, but also show it is an optimal result. We…

Optimization and Control · Mathematics 2017-04-18 M. Ruiz Galan

We establish sharp upper bounds for shifted moments of quadratic Dirichlet $L$-function under the generalized Riemann hypothesis. Our result is then used to prove bounds for moments of quadratic Dirichlet character sums.

Number Theory · Mathematics 2025-11-26 Peng Gao , Liangyi Zhao

We study a number of possible extensions of the Ramanujan master theorem, which is formulated here by using methods of Umbral nature. We discuss the implications of the procedure for the theory of special functions, like the derivation of…

Mathematical Physics · Physics 2015-03-19 K. Gorska , D. Babusci , G. Dattoli , G. H. E. Duchamp , K. A. Penson

Assuming the Riemann hypothesis, we prove the latest explicit version of the prime number theorem for short intervals. Using this result, and assuming the generalised Riemann hypothesis for Dirichlet $L$-functions is true, we then establish…

Number Theory · Mathematics 2023-03-10 Ethan S. Lee

It is shown that chiral perturbation theory (in its original form by Weinberg) can describe NN scattering with positive as well as negative effective range. Some issues connected with unnaturally large NN ^1S_0 scattering length are…

Nuclear Theory · Physics 2007-05-23 J. Gegelia

Diophantine approximation explores how well irrational numbers can be approximated by rationals, with foundational results by Dirichlet, Hurwitz, and Liouville culminating in Roth's theorem. Schmidt's subspace theorem extends Roth's results…

Number Theory · Mathematics 2025-02-06 Shivani Goel , Rashi Lunia , Anwesh Ray