Results 11 to 20 of about 20,351 (298)

Spherical orbits and representations of Uε(g) [PDF]

open access: yesTransformation Groups, 2005
Let Ue(g) be the simply connected quantized enveloping algebra at roots of one associated to a finite dimensional complex simple Lie algebra g. The De Concini-Kac-Procesi conjecture on the dimension of the irreducible representations of Ue(g) is proved for the representations corresponding to the spherical conjugacy classes of the simply connected ...
CANTARINI, NICOLETTA   +2 more
openaire   +3 more sources

Spherical k-Means Clustering

open access: yesJournal of Statistical Software, 2012
Clustering text documents is a fundamental task in modern data analysis, requiring approaches which perform well both in terms of solution quality and computational efficiency.
Kurt Hornik   +3 more
doaj   +3 more sources

Direct Systems of Spherical Functions and Representations

open access: yesJournal of Lie Theory, 2013
17 pages.
Dawson, Matthew   +2 more
openaire   +4 more sources

Spherical Covariance Representations

open access: yes
Covariance representations are developed for the uniform distributions on the Euclidean spheres in terms of spherical gradients and Hessians. They are applied to derive a number of Sobolev type inequalities and to recover and refine the concentration of measure phenomenon, including second order concentration inequalities.
Bobkov, Sergey G., Duggal, Devraj
openaire   +4 more sources

On the distinction of Iwahori-spherical representations

open access: yes, 2020
Let $E/F$ be a quadratic unramified extension of non-archimedean local fields and $\mathbb H$ a simply connected semisimple algebraic group defined and split over $F$. We establish general results (multiplicities, test vectors) on $\HH (F)$-distinguished Iwahori-spherical representations of $\HH (E)$.
Broussous, Paul
openaire   +3 more sources

On Sarnak’s Density Conjecture and Its Applications

open access: yesForum of Mathematics, Sigma, 2023
Sarnak’s density conjecture is an explicit bound on the multiplicities of nontempered representations in a sequence of cocompact congruence arithmetic lattices in a semisimple Lie group, which is motivated by the work of Sarnak and Xue ([58]).
Konstantin Golubev, Amitay Kamber
doaj   +1 more source

Investigating How Reproducibility and Geometrical Representation in UMAP Dimensionality Reduction Impact the Stratification of Breast Cancer Tumors

open access: yesApplied Sciences, 2022
Advances in next-generation sequencing have provided high-dimensional RNA-seq datasets, allowing the stratification of some tumor patients based on their transcriptomic profiles.
Jordy Bollon   +8 more
doaj   +1 more source

Spherical isotropy representations [PDF]

open access: yesPublications Mathématiques de l'IHÉS, 1985
An old question of P. A. Smith considers a finite group G acting smoothly on a closed homotopy sphere \(\Sigma\) with \(\Sigma^ G\) consisting of precisely two points and asks whether the representations of G on the tangent spaces at the two fixed points are the same. This would be true, obviously, for a linear action on a sphere.
Petrie, Ted, Randall, John
openaire   +2 more sources

A triangular system for local character expansions of Iwahori-spherical representations of general linear groups

open access: yesComptes Rendus. Mathématique, 2023
For Iwahori-spherical representations of non-Archimedean general linear groups, Chan–Savin recently expressed the Whittaker functor as a restriction to an isotypic component of a finite Iwahori–Hecke algebra module.
Gurevich, Maxim
doaj   +1 more source

Modelling realistic ballast shape to study the lateral pull behaviour using GPU computing [PDF]

open access: yesEPJ Web of Conferences, 2021
The use of the Discrete Element Method to model engineering structures implementing granular materials has proven to be an efficient method to response under various behaviour conditions.
Nader François   +4 more
doaj   +1 more source

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