Results 41 to 50 of about 11,399 (183)

Past and Present Trends in the Development of the Pattern-Formation Theory: Domain Walls and Quasicrystals

open access: yesPhysics, 2021
A condensed review is presented for two basic topics in the theory of pattern formation in nonlinear dissipative media: (i) domain walls (DWs, alias grain boundaries), which appear as transient layers between different states occupying semi-infinite ...
Boris A. Malomed
doaj   +1 more source

Homogenous finitary symmetric groups [PDF]

open access: yesInternational Journal of Group Theory, 2015
We characterize strictly diagonal type of embeddings of finitary symmetric groups in terms of cardinality and the characteristic. Namely, we prove the following. Let kappa be an infinite cardinal. If G=underseti=1stackrelinftybigcupG i , where G i =
Otto‎. ‎H‎. Kegel   +1 more
doaj  

On the Affine Weyl group of type A˜n−1

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1987
We study in this paper the affine Weyl group of type A˜n−1, [1]. Coxeter [1] showed that this group is infinite. We see in Bourbaki [2] that A˜n−1 is a split extension of Sn, the symmetric group of degree n, by a group of translations and of lattice of ...
Muhammad A. Albar
doaj   +1 more source

Best Approximations in Hardy Spaces on Infinite-Dimensional Unitary Matrix Groups

open access: yesAbstract and Applied Analysis, 2014
We investigate the problem of best approximations in the Hardy space of complex functions, defined on the infinite-dimensional unitary matrix group. Applying an abstract Besov-type interpolation scale and the Bernstein-Jackson inequalities, a behavior of
Oleh Lopushansky
doaj   +1 more source

On the trace-manifold generated by the deformations of a body-manifold [PDF]

open access: yesTheoretical and Applied Mechanics, 2003
In this paper, concerned to the study of continuous deformations of material media using some tools of modem differential geometry, a moving frame of Frenet type along the orbits of an one-parameter group acting on a so-called "trace-manifold", M ...
Boja Nicolae
doaj   +1 more source

Finite-temperature symmetric tensor network for spin-1/2 Heisenberg antiferromagnets on the square lattice

open access: yesSciPost Physics, 2021
Within the tensor network framework, the (positive) thermal density operator can be approximated by a double layer of infinite Projected Entangled Pair Operator (iPEPO) coupled via ancilla degrees of freedom.
Didier Poilblanc, Matthieu Mambrini, Fabien Alet
doaj   +1 more source

Hardy-Type Space Associated with an Infinite-Dimensional Unitary Matrix Group

open access: yesAbstract and Applied Analysis, 2013
We investigate an orthogonal system of the homogenous Hilbert-Schmidt polynomials with respect to a probability measure which is invariant under the right action of an infinite-dimensional unitary matrix group.
Oleh Lopushansky
doaj   +1 more source

Closed Hulls in Infinite Symmetric Groups [PDF]

open access: yesTransactions of the American Mathematical Society, 1973
Let Sym ⁡ M
openaire   +2 more sources

Infinite (continuous) spin fields in the frame-like formalism

open access: yesNuclear Physics B, 2018
In this paper we elaborate on the gauge invariant frame-like Lagrangian description for the wide class of the so-called infinite (or continuous) spin representations of Poincaré group.
M.V. Khabarov, Yu.M. Zinoviev
doaj   +1 more source

Orthogonal Polynomials of Compact Simple Lie Groups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2011
Recursive algebraic construction of two infinite families of polynomials in n variables is proposed as a uniform method applicable to every semisimple Lie group of rank n.
Maryna Nesterenko   +2 more
doaj   +1 more source

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