Results 81 to 90 of about 7,643 (187)

The Exact Density of the Eigenvalues of the Wishart and Matrix-Variate Gamma and Beta Random Variables

open access: yesMathematics
The determination of the distributions of the eigenvalues associated with matrix-variate gamma and beta random variables of either type proves to be a challenging problem. Several of the approaches utilized so far yield unwieldy representations that, for
A. M. Mathai, Serge B. Provost
doaj   +1 more source

Certain Classes of Finite Sums that Involve Generalized Fibonacci and Lucas Numbers

open access: yesThe Fibonacci quarterly, 2004
was the inspiration for [2], in which analogous sums involving cubes of Fibonacci numbers were developed. In turn, [2] was the motivation for [5], [6], and [7].
R. Melham
semanticscholar   +1 more source

On the Collocation Method in Constructing a Solution to the Volterra Integral Equation of the Second Kind Using Chebyshev and Legendre Polynomials

open access: yesИзвестия Иркутского государственного университета: Серия "Математика"
The paper proposes a matrix implementation of the collocation method for constructing a solution to Volterra integral equations of the second kind using systems of orthogonal Chebyshev polynomials of the first kind and Legendre polynomials. The integrand
O.V. Germider, V. N. Popov
doaj   +1 more source

Sum-product phenomenon in finite fields not of prime order

open access: yesRocky Mountain Journal of Mathematics, 2011
Let \(F=\mathbb F_{p^n}\) be a finite field, and let \(A\) be a subset of \(F\) so that for any \(A'\subset A\) with \(|A'|\geq |A|^{15/16}\) and for any subfield \(G\subset F\) and for any elements \(c,d\in F\) if \[ A'\subset cG+d, \] then \[ |A'|\leq |G|^{1/2}.
openaire   +3 more sources

Gate construction of block-encoding for Hamiltonians needed for simulating partial differential equations

open access: yesPhysical Review Research
One of the most promising applications of quantum computers is solving partial differential equations (PDEs). By using the Schrödingerization technique—which converts nonconservative PDEs into Schrödinger equations—the problem can be reduced to ...
Nikita Guseynov, Xiajie Huang, Nana Liu
doaj   +1 more source

Asymptotics of Closeness Centralities of Graphs

open access: yesMathematics
Given a connected graph G with n vertices, the distance between two vertices is the number of edges in a shortest path connecting them. The sum of the distances in a graph G from a vertex v to all other vertices is denoted by SDG(v).
Santiago Frias   +3 more
doaj   +1 more source

A sum-product estimate in finite fields, and applications [PDF]

open access: green, 2003
Jean Bourgain   +2 more
openalex   +1 more source

Monochromatic Sums and Products of Polynomials

open access: yesDiscrete Analysis
Monochromatic sums and products of polynomials, Discrete Analysis 2024:5, 7 pp. An early result in Ramsey theory, Schur's theorem, states that if the positive integers are finitely coloured, then there will always be $x$ and $y$ such that $x,y$ and $x ...
Ryan Alweiss
doaj   +1 more source

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