Results 11 to 20 of about 359 (44)

IGUSA’S CONJECTURE FOR EXPONENTIAL SUMS: OPTIMAL ESTIMATES FOR NONRATIONAL SINGULARITIES

open access: yesForum of Mathematics, Pi, 2019
We prove an upper bound on the log canonical threshold of a hypersurface that satisfies a certain power condition and use it to prove several generalizations of Igusa’s conjecture on exponential sums, with the log canonical threshold in the exponent of ...
RAF CLUCKERS   +2 more
doaj   +1 more source

Upper bound estimate of incomplete Cochrane sum

open access: yesOpen Mathematics, 2017
By using the properties of Kloosterman sum and Dirichlet character, an optimal upper bound estimate of incomplete Cochrane sum is given.
Ma Yuankui, Peng Wen, Zhang Tianping
doaj   +1 more source

Newton slopes for Artin-Schreier-Witt towers [PDF]

open access: yes, 2015
We fix a monic polynomial $f(x) \in \mathbb F_q[x]$ over a finite field and consider the Artin-Schreier-Witt tower defined by $f(x)$; this is a tower of curves $\cdots \to C_m \to C_{m-1} \to \cdots \to C_0 =\mathbb A^1$, with total Galois group $\mathbb
Davis, Christopher   +2 more
core   +4 more sources

INVERSIVE CONGRUENTIAL GENERATOR WITH A VARIABLE SHIFT OF PSEUDORANDOM POINTS OVER THE COMPLEX PLANE

open access: yes, 2015
Consider the generator of pseudorandom points on unit square produced by the inversive congruential recursion over the ring of Gaussian integers. Study the exponential sums on sequences of these points.
T. T. Vinh
semanticscholar   +1 more source

One kind sixth power mean of the three-term exponential sums

open access: yesOpen Mathematics, 2017
In this paper, we use the estimate for trigonometric sums and the properties of the congruence equations to study the computational problem of one kind sixth power mean of the three-term exponential sums.
Wang Xiaoying, Li Xiaoxue
doaj   +1 more source

Vinogradov systems with a slice off [PDF]

open access: yes, 2017
Let $I_{s,k,r}(X)$ denote the number of integral solutions of the modified Vinogradov system of equations $$x_1^j+\ldots +x_s^j=y_1^j+\ldots +y_s^j\quad (\text{$1\le j\le k$, $j\ne r$}),$$ with $1\le x_i,y_i\le X$ $(1\le i\le s)$.
Brandes, Julia, Wooley, Trevor D.
core   +5 more sources

Cancellations Amongst Kloosterman Sums

open access: yes, 2016
We obtain several estimates for bilinear form with Kloosterman sums. Such results can be interpreted as a measure of cancellations amongst with parameters from short intervals.
Shparlinski, I. E., Zhang, T. P.
core   +1 more source

On Primes Represented by Quadratic Polynomials

open access: yes, 2007
This is a survey article on the Hardy-Littlewood conjecture about primes in quadratic progressions. We recount the history and quote some results approximating this hitherto unresolved conjecture.Comment: six(6) pages, minor changes were ...
Baier, Stephan, Zhao, Liangyi
core   +5 more sources

Multiple Exponential and Character Sums with Monomials

open access: yes, 2013
We obtain new bounds of multivariate exponential sums with monomials, when the variables run over rather short intervals. Furthermore, we use the same method to derive estimates on similar sums with multiplicative characters to which previously known ...
Shparlinski, Igor
core   +1 more source

Almost all palindromes are composite

open access: yes, 2004
We study the distribution of palindromic numbers (with respect to a fixed base $g\ge 2$) over certain congruence classes, and we derive a nontrivial upper bound for the number of prime palindromes $n\le x$ as $x\to\infty$.
Banks, William D.   +2 more
core   +2 more sources

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