Spherical Functions and a q-Analogue of Kostant's Weight Multiplicity Formula.
Spherical functions on a complex classical quantum group
Spherical functions on a family of quantum 3-spheres
Spin chain connected to the quantum superalgebra .
Spin groups over a commutative ring and the associated root data (odd rank case).
Split faces and ideal structure of operator algebras.
Springer Forms and the First Tits Construction of Exceptional Jordan Division Algebras.
Square integrability of group representations on homogeneous spaces and generalized coherent states
Square subgroups of rank two abelian groups
Let G be an abelian group and ◻ G its square subgroup as defined in the introduction. We show that the square subgroup of a non-homogeneous and indecomposable torsion-free group G of rank two is a pure subgroup of G and that G/◻ G is a nil group.
Squared Hopf algebras and reconstruction theorems
Given an abelian 𝑉-linear rigid monoidal category 𝑉, where 𝑉 is a perfect field, we define squared coalgebras as objects of cocompleted 𝑉 ⨂ 𝑉 (Deligne's tensor product of categories) equipped with the appropriate notion of comultiplication. Based on this, (squared) bialgebras and Hopf algebras are defined without use of braiding. If 𝑉 is the category of 𝑉-vector spaces, squared (co)algebras coincide with conventional ones. If 𝑉 is braided, a braided Hopf algebra can be obtained from a squared...
Stability of commuting maps and Lie maps
Let A be an ultraprime Banach algebra. We prove that each approximately commuting continuous linear (or quadratic) map on A is near an actual commuting continuous linear (resp. quadratic) map on A. Furthermore, we use this analysis to study how close are approximate Lie isomorphisms and approximate Lie derivations to actual Lie isomorphisms and Lie derivations, respectively.
Stable bundles and algebraically completely integrable systems
Stable subnorms on finite-dimensional power-associative algebras.
Stably free, projective right ideals
Standard domino tableaux and asymptotic Hecke algebras
Standard Subalgebras of Semisimple Lie Algebras and Computer-Aided for Enumeration
The aim of this work is to enumerate the standard subalgebras of a semisimple Lie algebra. The computations are based on the approach developed by Yu. Khakimdjanov in 1974. In this paper, we give a general formula for the number of standard subalgebras not necessarly nilpotent of a semisimple Lie algebra of type A and the exceptional semisimple Lie algebras. With computer aided, we enumerate this number for the other types of small rank. Therefore, We deduce the number in the nilpotent case and...
Star-products on symplectic manifolds
Statistics and quantum group symmetries
Using 'twisted' realizations of the symmetric groups, we show that Bose and Fermi statistics are compatible with transformations generated by compact quantum groups of Drinfel'd type.
Stem extensions and stem covers of Leibniz algebras.
Strange phenomena related to ordering problems in quantizations.