Results 71 to 80 of about 1,702,334 (237)

Finite difference quantum Toda lattice via equivariant K-theory

open access: yes, 2005
We construct the action of the quantum group U_v(sl_n) by the natural correspondences in the equivariant localized $K$-theory of the Laumon based Quasiflags' moduli spaces. The resulting module is the universal Verma module.
Braverman, Alexander   +1 more
core   +3 more sources

cuSten — CUDA finite difference and stencil library

open access: yesSoftwareX, 2019
In this paper we present cuSten, a new library of functions to handle the implementation of 2D and batched 1D finite-difference/stencil programs in CUDA. cuSten wraps data handling, kernel calls and streaming into four easy to use functions that speed up
Andrew Gloster, Lennon Ó Náraigh
doaj  

Deviation of the Error Estimation for Second Order Fredholm-Volterra Integro Differential Equations

open access: yesMathematical Modelling and Analysis, 2016
In this paper we study the deviation of the error estimation for the second order Fredholm-Volterra integro-differential equations. We prove that for m degree piecewise polynomial collocation method, our method provides O(hm+1) as the order of the ...
Reza Parvaz   +2 more
doaj   +1 more source

On the difference between permutation polynomials over finite fields [PDF]

open access: yes, 2017
The well-known Chowla and Zassenhaus conjecture, proven by Cohen in 1990, states that if $p>(d^2-3d+4)^2$, then there is no complete mapping polynomial $f$ in $\Fp[x]$ of degree $d\ge 2$.
Anbar, Nurdagül   +5 more
core   +1 more source

Nonstandard finite difference schemes for differential equations

open access: yesSahand Communications in Mathematical Analysis, 2014
In this paper, the reorganization of the denominator of the discrete derivative and nonlocal approximation of nonlinear terms are used in the design of nonstandard finite difference schemes (NSFDs).
Mohammad Mehdizadeh Khalsaraei   +1 more
doaj  

Finite differences and determinant identities

open access: yesLinear Algebra and its Applications, 2009
AbstractDeterminants of higher derivatives of composite functions are evaluated as limits of the corresponding ones concerning finite differences. As examples, several interesting identities of Wronskian and Hankel determinants are consequently derived.
openaire   +3 more sources

Finite Difference Approximation of Free Discontinuity Problems

open access: yes, 1999
We approximate functionals depending on the gradient of $u$ and on the behaviour of $u$ near the discontinuity points, by families of non-local functionals where the gradient is replaced by finite differences.
Gobbino, Massimo, Mora, Maria Giovanna
core   +1 more source

Vortical flow of incompressible viscous fluid in finite cylinder

open access: yesMathematical Modelling and Analysis, 2008
The effective use of vortex energy in production of strong velocity fields by different devices is one of the modern areas of applications, developed during the last decade.
Harijs Kalis, Ilmārs Kangro
doaj   +1 more source

A generalization of concavity for finite differences

open access: yesComputers & Mathematics with Applications, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Finite difference approximations for a class of non-local parabolic equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1997
In this paper we study finite difference procedures for a class of parabolic equations with non-local boundary condition. The semi-implicit and fully implicit backward Euler schemes are studied.
Yanping Lin   +2 more
doaj   +1 more source

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