Results 21 to 30 of about 545,608 (316)

Diagonal Symmetric Pattern-Based Illumination Invariant Measure for Severe Illumination Variation Face Recognition

open access: yesIEEE Access, 2020
The center symmetric pattern (CSP) was widely used in the local binary pattern based facial feature, whereas never used to develop the illumination invariant measure in the literature.
Changhui Hu   +5 more
doaj   +1 more source

Synthesis and structural characterization of a novel 2D supramolecular lead coordination polymer with phenanthroline derivate and adipic acid

open access: yesMain Group Metal Chemistry, 2021
A new metal-organic coordination polymer, [Pb(L)(adip)0.5] (1) was synthesized under hydrothermal conditions by using 1-(1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)naphthalen-2-ol (HL) and adipic acid (H2adip).
Song Yu, Yan Yu, Zhang Hua, Wang Xiuyan
doaj   +1 more source

On the fusion procedure for the symmetric group [PDF]

open access: yes, 2007
We give a new version of the fusion procedure for the symmetric group which originated in the work of Jucys and was developed by Cherednik. We derive it from the Jucys-Murphy formulas for the diagonal matrix units for the symmetric group.Comment: 9 pages,
Molev, A. I.
core   +2 more sources

Group identities on symmetric units

open access: yesJournal of Algebra, 2009
The group algebra \(FG\) of a group \(G\) over a field \(F\) is naturally endowed with an involution *, i.e., the \(F\)-linear extension of the involution on \(G\) given by \(g\mapsto g^{-1}\). The latter is called the classical involution and has received substantial interest. Of course, there are obvious more general involutions of \(FG\), namely the
GIAMBRUNO, Antonino   +2 more
openaire   +3 more sources

Analysis of eye movements in the judgment of enjoyment and non-enjoyment smiles

open access: yesFrontiers in Psychology, 2013
Enjoyment smiles are more often associated with the simultaneous presence of the Cheek raiser and Lip corner puller action units, and these units’ activation is more often symmetric.
Mélanie ePerron, Annie eRoy-Charland
doaj   +1 more source

Symmetric units satisfying a group identity

open access: yesJournal of Algebra, 2007
Let \(U(KG)\) be the group of units of the group algebra \(KG\) of a locally finite group \(G\) over a field \(K\) of \(\text{char}(K)\neq 2\). Let \(\varphi\colon KG\to KG\) be the \(K\)-linear extension of an anti-automorphism \(\varphi\) of order \(2\) on \(G\) and set \(S_\varphi(KG)=\{u\in U(KG)\mid\varphi(u)=u\}\).
Dooms, Ann, Ruiz, M.
openaire   +3 more sources

On the symmetric square. Unit elements [PDF]

open access: yesPacific Journal of Mathematics, 1996
\textit{J.-L. Waldspurger}'s recent coherence result [Publ. Math., Inst. Hautes Etud. Sci. 81, 25-72 (1995; Zbl 0841.22009)] for the germ expansion of the orbital integral of the unit element in the Hecke algebra on the topologically unipotent set, and Kazhdan's decomposition of compact elements into topologically unipotent and absolutely semi-simple ...
openaire   +3 more sources

Lie nilpotency indices of symmetric elements under oriented involutions in group algebras [PDF]

open access: yes, 2013
Let $G$ be a group and let $F$ be a field of characteristic different from 2. Denote by $(FG)^+$ the set of symmetric elements and by $\mathcal{U}^+(FG)$ the set of symmetric units, under an oriented classical involution of the group algebra $FG$.
Castillo, John H.
core   +3 more sources

Detecting internally symmetric protein structures

open access: yesBMC Bioinformatics, 2010
Background Many functional proteins have a symmetric structure. Most of these are multimeric complexes, which are made of non-symmetric monomers arranged in a symmetric manner.
Basner Jodi   +2 more
doaj   +1 more source

Spectra of units for periodic ring spectra and group completion of graded E-infinity spaces [PDF]

open access: yes, 2015
We construct a new spectrum of units for a commutative symmetric ring spectrum that detects the difference between a periodic ring spectrum and its connective cover. It is augmented over the sphere spectrum.
Boardman   +11 more
core   +2 more sources

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