Results 11 to 20 of about 69,260 (298)

On the theory of recursion operator [PDF]

open access: yesCommunications in Mathematical Physics, 1984
The recursion operator plays a central role in the theory of nonlinear equations integrable by the inverse scattering method. It generates a whole family of equations integrable by a given spectral problem, starting from a given one. For example, for the famous KdV equation this family is given by (KdV equation corresponds to \(n=1)\) \[ \partial_ tu ...
Zakharov, V. E., Konopel'chenko, B. G.
openaire   +4 more sources

Operations in A-theory

open access: yesJournal of Pure and Applied Algebra, 2002
This paper gives a construction for Segal operations in the \(K\)-theory of categories with cofibrations, weak equivalences and a biexact pairing. The construction extends work of Grayson on exact categories. In particular the construction produces operations in the algebraic \(K\)-theory of spaces (\(A\)-theory); these are shown to be the operations ...
Thomas Gunnarsson, Roland Schwänzl
openaire   +3 more sources

A counterexample in operator theory [PDF]

open access: yesPublicacions Matemàtiques, 1993
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +5 more sources

Operational locality in global theories [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2018
Within a global physical theory, a notion of locality allows us to find and justify information-processing primitives, like non-signalling between distant agents. Here, we propose exploring the opposite direction: to take agents as the basic building blocks through which we test a physical theory, and recover operational notions of locality from ...
Lea Krämer   +2 more
openaire   +7 more sources

Approximation of Functions by Dunkl-Type Generalization of Szász-Durrmeyer Operators Based on p,q-Integers

open access: yesJournal of Function Spaces, 2021
In this article, our main purpose is to define the p,q-variant of Szász-Durrmeyer type operators with the help of Dunkl generalization generated by an exponential function.
Abdullah Alotaibi
doaj   +1 more source

A Dunkl type generalization of Szász operators via post-quantum calculus

open access: yesJournal of Inequalities and Applications, 2018
The object of this paper to construct Dunkl type Szász operators via post-quantum calculus. We obtain some approximation results for these new operators and compute convergence of the operators by using the modulus of continuity.
Abdullah Alotaibi   +2 more
doaj   +1 more source

Genuine modified Bernstein–Durrmeyer operators

open access: yesJournal of Inequalities and Applications, 2018
The present paper deals with genuine Bernstein–Durrmeyer operators which preserve some certain functions. The rate of convergence of new operators via a Peetre K $\mathcal{K}$-functional and corresponding modulus of smoothness, quantitative Voronovskaya ...
Syed Abdul Mohiuddine   +2 more
doaj   +1 more source

Extended Weyl-Type Theorems for Direct Sums

open access: yesDemonstratio Mathematica, 2014
In this paper, we study the stability of extended Weyl and Browdertype theorems for orthogonal direct sum S⊕T, where S and T are bounded linear operators acting on Banach space.
Berkani M., Kachad M., Zariouh H.
doaj   +1 more source

Operational $K$-theory

open access: yesDocumenta Mathematica, 2015
We study the operational bivariant theory associated to the covariant theory of Grothendieck groups of coherent sheaves, and prove that it has many geometric properties analogous to those of operational Chow theory. This operational K -theory agrees with Grothendieck groups of vector ...
Anderson, Dave, Payne, Sam
openaire   +2 more sources

Sequence spaces M ( ϕ ) $M(\phi)$ and N ( ϕ ) $N(\phi)$ with application in clustering

open access: yesJournal of Inequalities and Applications, 2017
Distance measures play a central role in evolving the clustering technique. Due to the rich mathematical background and natural implementation of l p $l_{p}$ distance measures, researchers were motivated to use them in almost every clustering process ...
Mohd Shoaib Khan   +3 more
doaj   +1 more source

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