A partial improvement of the Ax–Katz theorem

W Cao - Journal of Number Theory, 2012 - Elsevier
Given a system of polynomial equations over a finite field, estimating the p-divisibility of the
number of solutions of the system is a classical problem which has been studied extensively …

Exact 𝑝-divisibility of exponential sums via the covering method

F Castro, I Rubio - Proceedings of the American Mathematical Society, 2015 - ams.org
In general, the methods to estimate the $ p $-divisibility of exponential sums or the number
of solutions of systems of polynomial equations over finite fields are non-elementary. In this …

Improvement to Moreno–Morenoʼs theorems

F Castro, FN Castro-Velez - Finite Fields and Their Applications, 2012 - Elsevier
In this work, we introduce the p-weight degree of a polynomial over a finite field with respect
to a subset of the variables. Using this p-weight, we improve the results of Moreno and …

A generalization of the theorems of Chevalley-Warning and Ax-Katz via polynomial substitutions

I Baoulina, A Bishnoi, P Clark - Proceedings of the American Mathematical …, 2019 - ams.org
We give conditions under which the number of solutions of a system of polynomial equations
over a finite field $\mathbb {F} _q $ of characteristic $ p $ is divisible by $ p $. Our setup …

Solvability of systems of polynomial equations with some prescribed monomials

IM Rubio, FN Castro - … on Finite Fields and Applications, July 13 …, 2010 - books.google.com
We prove that, under some natural conditions, given a system of polynomials F1,···, Ft with
monomials of disjoint support, any system F1+ G1,···, Ft+ Gt, where the p-weight degree of …

A Generalization of the Chevalley–Warning and Ax–Katz Theorems with a View Towards Combinatorial Number Theory

DJ Grynkiewicz - Combinatorica, 2023 - Springer
Let F q be a finite field of characteristic p and order q. The Chevalley–Warning Theorem
asserts that the set V of common zeros of a collection of polynomials must satisfy| V|≡ 0 mod …

Divisibility on point counting over finite Witt rings

W Cao, D Wan - Finite Fields and Their Applications, 2023 - Elsevier
Let F q denote the finite field of q elements with characteristic p. Let Z q denote the
unramified extension of the p-adic integers Z p with residue field F q. In this paper, we …

Improvements upon the Chevalley–Warning–Ax–Katz-type estimates

W Cao, Q Sun - Journal of Number Theory, 2007 - Elsevier
Let f be a polynomial over finite field Fq with q elements and let N (f= 0) denote the number
of zeros of f in Fq. The q-divisibility properties of N (f= 0) have been studied by many authors …

Construction of systems of polynomial equations with exact p-divisibility via the covering method

FN Castro, IM Rubio - Journal of Algebra and Its Applications, 2014 - World Scientific
We present an elementary method to compute the exact p-divisibility of exponential sums of
systems of polynomial equations over the prime field. Our results extend results by Carlitz …

[PDF][PDF] An explicit approach to Hypothesis H for polynomials over a finite field

P Pollack - Proceedings of the Anatomy of Integers Conference …, 2006 - Citeseer
Schinzel's Hypothesis H predicts that a family of irreducible polynomials over the integers
satisfying certain necessary local conditions simultaneously assumes prime values infinitely …