Results 11 to 20 of about 4,720,579 (297)

Algorithms and error bounds for multivariate piecewise constant approximation [PDF]

open access: yes, 2011
We review the surprisingly rich theory of approximation of functions of many vari- ables by piecewise constants. This covers for example the Sobolev-Poincar´e inequalities, parts of the theory of nonlinear approximation, Haar wavelets and tree ...
Davydov, Oleg
core   +3 more sources

Homomorphisms of Approximation Spaces [PDF]

open access: yesJournal of Applied Mathematics, 2012
The notion of the homomorphism of approximation spaces is introduced. Some properties of homomorphism are investigated, and some characterizations of homomorphism are given. Furthermore, the notion of approximation subspace of approximation spaces is introduced. The relations between approximation subspaces and homomorphisms are studied.
Wang, Zhaohao, Shu, Lan, Ding, Xiuyong
openaire   +3 more sources

Uniform approximation for period-quadrupling bifurcations. [PDF]

open access: yes, 1998
. We derive a uniform approximation for semiclassical contributions of periodic orbits to the spectral density which is valid for generic period-quadrupling bifurcations in systems with a mixed phase space.
Schomerus, Henning, Sieber, Martin
core   +4 more sources

Approximation in (Poly-) Logarithmic Space [PDF]

open access: yesAlgorithmica, 2021
MFCS ...
Arindam Biswas 0001   +2 more
openaire   +8 more sources

On IVF Approximating Spaces [PDF]

open access: yesJournal of Applied Mathematics, 2013
We introduce the concept of IVF approximating spaces and obtain decision conditions that every IVF topological space is an IVF approximating space.
Zheng, Dingwei   +2 more
openaire   +5 more sources

Variational inequations and approximation [PDF]

open access: yes, 1974
The existence and uniqueness of the solution of a variational inequality is considered, and methods of approximation of the solution are given.
Noor, MA
core   +4 more sources

Approximation of Space-Time Fractional Equations

open access: yesFractal and Fractional, 2021
The aim of this paper is to provide approximation results for space-time non-local equations with general non-local (and fractional) operators in space and time.
Raffaela Capitanelli, Mirko D’Ovidio
doaj   +1 more source

Fuzzy Approximating Spaces [PDF]

open access: yesJournal of Applied Mathematics, 2014
Relationships between fuzzy relations and fuzzy topologies are deeply researched. The concept of fuzzy approximating spaces is introduced and decision conditions that a fuzzy topological space is a fuzzy approximating space are obtained.
openaire   +5 more sources

On the Eikonal approximation in AdS space [PDF]

open access: yesJournal of High Energy Physics, 2009
We explore the eikonal approximation to graviton exchange in AdS_5 space, as relevant to scattering in gauge theories. We restrict ourselves to the regime where conformal invariance of the dual gauge theory holds, and to large 't Hooft coupling where the computation involves pure gravity.
Brower, Richard C.   +2 more
openaire   +3 more sources

Interpolated scales of approximation spaces for regular elliptic operators on compact manifolds

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2014
We define the interpolated scales of approximation spaces, generated by regular elliptic operators on compact manifolds. The appropriate Bernstein-Jackson inequalities and application to spectral approximations of regular elliptic operators are ...
M.I. Dmytryshyn
doaj   +1 more source

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