Results 51 to 60 of about 11,399 (183)

5,5′-Dimethoxy-2,2′-[(pentane-1,5-diyldioxy)bis(nitrilomethylidyne)]diphenol

open access: yesActa Crystallographica Section E, 2009
The molecule of the title compound, C21H26N2O6, which lies across a crystallographic inversion centre, crystallizes with two unique half-molecules in the symmetric unit and adopts a linear configuration and the imino group is coplanar with the aromatic ...
Li Li   +4 more
doaj   +1 more source

Asymptotically Safe Gravity-Fermion Systems on Curved Backgrounds

open access: yesUniverse, 2021
We set up a consistent background field formalism for studying the renormalization group (RG) flow of gravity coupled to Nf Dirac fermions on maximally symmetric backgrounds.
Jesse Daas   +3 more
doaj   +1 more source

Research on the chaotic secure communication of the phase-space symmetric Lorenz oscillator group

open access: yesTongxin xuebao, 2019
To meet the demand of chaotic oscillators for large scale secure communications,the Lorenz oscillator was taken as an example,a phase-space symmetric chaotic oscillator group model was proposed and the synchronization problem was studied.According to the
Linfang LIU   +3 more
doaj   +2 more sources

On the transverse Scalar Curvature of a Compact Sasaki Manifold

open access: yesComplex Manifolds, 2014
We show that the standard picture regarding the notion of stability of constant scalar curvature metrics in Kähler geometry described by S.K. Donaldson [10, 11], which involves the geometry of infinitedimensional groups and spaces, can be applied to the ...
He Weiyong
doaj   +1 more source

Subgroups of small Index in infinite Symmetric Groups

open access: yesBulletin of the London Mathematical Society, 1986
Let \(\Omega\) be an infinite set having cardinality \(n:=| \Omega |\), and let \(S:=Sym(\Omega)\) be its symmetric group having then cardinality \(2^ n\). Moreover, let G be a subgroup of S and let \(S_{\{\Delta \}}\) or \(G_{\{\Delta \}}\) be the setwise stabilizer of \(\Delta\) in S or in G, respectively, for each subset \(\Delta\subseteq \Omega ...
Dixon, J, Neumann, P, Thomas, S
openaire   +3 more sources

Tensor models, Kronecker coefficients and permutation centralizer algebras

open access: yesJournal of High Energy Physics, 2017
We show that the counting of observables and correlators for a 3-index tensor model are organized by the structure of a family of permutation centralizer algebras.
Joseph Ben Geloun, Sanjaye Ramgoolam
doaj   +1 more source

The Index Problem for Infinite Symmetric Groups [PDF]

open access: yesProceedings of the American Mathematical Society, 1964
Let M be an infinite set with cardinal X, S(X, Y) = o-: ois a permutation on M such that I spt oj I d has no subgroups of index less than or equal Z. In this paper, the following generalization of these results is proven.
openaire   +1 more source

Noncommutative independence in the infinite braid and symmetric group [PDF]

open access: yesBanach Center Publications, 2011
This is an introductory paper about our recent merge of a noncommutative de Finetti type result with representations of the infinite braid and symmetric group which allows to derive factorization properties from symmetries. We explain some of the main ideas of this approach and work out a constructive procedure to use in applications.
Gohm, Rolf, Köstler, Claus
openaire   +2 more sources

On matrix representations of oversemigroups of semigroups generated by two mutually annihilating idempotents

open access: yesНауковий вісник Ужгородського університету. Серія: Математика і інформатика, 2020
Matrix representations of finite semigroups over fields are studied not so well as for finite groups. Representations of finite groups over fields are studied sufficiently well; in particular, the criterions of representation type are fully defined for ...
В. М. Бондаренко   +1 more
doaj   +1 more source

On a class of stationary loops on SO(n) $\mathbf{SO}(n)$ and the existence of multiple twisting solutions to a nonlinear elliptic system subject to a hard incompressibility constraint

open access: yesBoundary Value Problems, 2018
In this paper we consider the second order nonlinear elliptic system in divergence and variational form {div[Fξ(|x|,|∇u|2)∇u]=[cof∇u]∇Pin U,det∇u=1in U,u=φon ∂U, $$\begin{aligned} \textstyle\begin{cases} \operatorname{div}[ F_{\xi }(\vert x\vert ,\vert ...
George Morrison, Ali Taheri
doaj   +1 more source

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