Results 31 to 40 of about 58,365 (183)

Semi-analytical approximation of the normal derivative of the heat simple layer potential near the boundary of a two-dimensional domain [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
A semi-analytical approximation of the normal derivative of the simple layer heat potential near the boundary of a two-dimensional domain with $C^{5} $ smoothness is proposed.
Ivanov, Dmitrii Yurievich
doaj   +1 more source

Factorization of Numbers with the temporal Talbot effect: Optical implementation by a sequence of shaped ultrashort pulses [PDF]

open access: yes, 2007
We report on the successful operation of an analogue computer designed to factor numbers. Our device relies solely on the interference of classical light and brings together the field of ultrashort laser pulses with number theory.
Bertrand Girard   +12 more
core   +3 more sources

On Tractable Exponential Sums [PDF]

open access: yes, 2010
We consider the problem of evaluating certain exponential sums. These sums take the form $\sum_{x_1,...,x_n \in Z_N} e^{f(x_1,...,x_n) {2 \pi i / N}} $, where each x_i is summed over a ring Z_N, and f(x_1,...,x_n) is a multivariate polynomial with ...
A. Bulatov   +10 more
core   +1 more source

Factorization of numbers with Gauss sums: I. Mathematical background

open access: yes, 2011
We use the periodicity properties of generalized Gauss sums to factor numbers. Moreover, we derive rules for finding the factors and illustrate this factorization scheme for various examples.
Averbukh, I. Sh.   +4 more
core   +7 more sources

A Kronecker-type identity and the representations of a number as a sum of three squares [PDF]

open access: yes, 2017
By considering a limiting case of a Kronecker-type identity, we obtain an identity found by both Andrews and Crandall. We then use the Andrews-Crandall identity to give a new proof of a formula of Gauss for the representations of a number as a sum of ...
Mortenson, E.
core   +3 more sources

On the mean value of dedekind sum weighted by the quadratic gauss sum [PDF]

open access: yesCzechoslovak Mathematical Journal, 2013
Let \(p\) be the prime greater than \(3\) and such that \(p\equiv 3 \mod 4\). The authors prove three identities. Among them the most important is \[ h_p^2=\frac {(p-1)(p-2)}6-\sum _{m=1}^{p-1}G(m^2-1,\chi _0;p)S(c^2,p), \] where \(h_p\), \(G(m,\chi ;q)\) and \(S(h,q)\) is the class number of the quadratic field \(\mathbb Q(\sqrt {-p})\), the quadratic
Wang, Tingting, Zhang, Wenpeng
openaire   +1 more source

Lattices with many Borcherds products [PDF]

open access: yes, 2015
We prove that there are only finitely many isometry classes of even lattices $L$ of signature $(2,n)$ for which the space of cusp forms of weight $1+n/2$ for the Weil representation of the discriminant group of $L$ is trivial.
Bruinier, Jan Hendrik   +2 more
core   +1 more source

The value distribution of incomplete Gauss sums

open access: yes, 2012
It is well known that the classical Gauss sum, normalized by the square-root number of terms, takes only finitely many values. If one restricts the range of summation to a subinterval, a much richer structure emerges.
Chinen   +4 more
core   +1 more source

The classification of 2-connected 7-manifolds [PDF]

open access: yes, 2018
We present a classification theorem for closed smooth spin 2-connected 7-manifolds M. This builds on the almost-smooth classification from the first author's thesis.
Crowley, Diarmuid, Nordström, Johannes
core   +2 more sources

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