Results 1 to 10 of about 188 (37)

On the Waring-Goldbach problem for two squares and four cubes

open access: yesOpen Mathematics, 2023
Let NN be a sufficiently large integer. In this article, it is proved that, with at most O(N112+ε)O\left({N}^{\tfrac{1}{12}+\varepsilon }) exceptions, all even positive integers up to NN can be represented in the form p12+p22+p33+p43+p53+p63{p}_{1}^{2 ...
Zhang Min, Bai Hongxin, Li Jinjiang
doaj   +1 more source

The Density of Rational Points on Non‐Singular Hypersurfaces, I [PDF]

open access: yes, 2005
For any n ⩾ 3, let F ∈ Z[X0, …, Xn] be a form of degree d ⩾ 5 that defines a non‐singular hypersurface X ⊂ Pn. The main result in this paper is a proof of the fact that the number N(F; B) of Q‐rational points on X which have height at most B satisfies N ...
Tim D Browning, D. R. Heath-Brown
semanticscholar   +1 more source

Short intervals asymptotic formulae for binary problems with primes and powers, I: density 3/2 [PDF]

open access: yes, 2016
We prove that suitable asymptotic formulae in short intervals hold for the problems of representing an integer as a sum of a prime and a square, or a prime square.
A., Zaccagnini, Languasco, Alessandro
core   +4 more sources

A pair of equations in unlike powers of primes and powers of 2

open access: yesOpen Mathematics, 2020
In this article, we show that every pair of large even integers satisfying some necessary conditions can be represented in the form of a pair of one prime, one prime squares, two prime cubes, and 187 powers of 2.
Cai Yong, Hu Liqun
doaj   +1 more source

Equal sums of like polynomials [PDF]

open access: yes, 2005
Let $f$ be a polynomial of degree $d>6$, with integer coefficients. Then the paucity of non-trivial positive integer solutions to the equation $f(a)+f(b)=f(c)+f(d)$ is established.
Browning, T. D.
core   +1 more source

Quantitative relations between short intervals and exceptional sets of cubic Waring-Goldbach problem

open access: yesOpen Mathematics, 2017
In this paper, we are able to prove that almost all integers n satisfying some necessary congruence conditions are the sum of j almost equal prime cubes with j = 7, 8, i.e., N=p13+…+pj3$\begin{array}{} N=p_1^3+ \ldots +p_j^3 \end{array} $ with |pi−(N ...
Feng Zhao
doaj   +1 more source

Exceptional sets in Waring's problem: two squares and s biquadrates [PDF]

open access: yes, 2014
Let $R_s(n)$ denote the number of representations of the positive number $n$ as the sum of two squares and $s$ biquadrates. When $s=3$ or $4$, it is established that the anticipated asymptotic formula for $R_s(n)$ holds for all $n\le X$ with at most $O(X^
Zhao, Lilu
core   +1 more source

On pairs of equations in unlike powers of primes and powers of 2

open access: yesOpen Mathematics, 2017
In this paper, we obtained that when k = 455, every pair of large even integers satisfying some necessary conditions can be represented in the form of a pair of unlike powers of primes and k powers of 2.
Hu Liqun, Yang Li
doaj   +1 more source

On the Waring--Goldbach problem for eighth and higher powers [PDF]

open access: yes, 2015
Recent progress on Vinogradov's mean value theorem has resulted in improved estimates for exponential sums of Weyl type. We apply these new estimates to obtain sharper bounds for the function $H(k)$ in the Waring--Goldbach problem.
Angel V. Kumchev, D. Wooley, Trevor
core   +4 more sources

On Waring's problem for intermediate powers [PDF]

open access: yes, 2016
Let $G(k)$ denote the least number $s$ such that every sufficiently large natural number is the sum of at most $s$ positive integral $k$th powers. We show that $G(7)\le 31$, $G(8)\le 39$, $G(9)\le 47$, $G(10)\le 55$, $G(11)\le 63$, $G(12)\le 72$, $G(13 ...
Wooley, Trevor D.
core   +3 more sources

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