Results 61 to 70 of about 140,027 (183)

Connections with Irreducible Holonomy Representations

open access: yesAdvances in Mathematics, 2001
A subgroup of a linear group is called a Berger group if it satisfies all algebraic conditions for being the holonomy group of a torsion free affine connection. These conditions were introduced by Berger who also produced the list of such groups. Famous problems of differential geometry were to establish which groups from this list are realized by the ...
openaire   +1 more source

Kronecker coefficients: the tensor square conjecture and unimodality [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2014
We consider two aspects of Kronecker coefficients in the directions of representation theory and combinatorics. We consider a conjecture of Jan Saxl stating that the tensor square of the $S_n$-irreducible representation indexed by the staircase partition
Igor Pak, Greta Panova, Ernesto Vallejo
doaj   +1 more source

Irreducible representations of the rational Cherednik algebra associated to the Coxeter group H_3 [PDF]

open access: yes, 2010
This paper describes irreducible representations in category O of the rational Cherednik algebra H_c(H_3,h) associated to the exceptional Coxeter group H_3 and any complex parameter c. We compute the characters of all these representations explicitly. As
Balagovic, Martina, Puranik, Arjun
core  

IRREDUCIBLE '-REPRESENTATIONS ON BANACH '-ALGEBRAS

open access: yesDemonstratio Mathematica, 1999
Let \(A\) be a complex Banach \(*\)-algebra and, for \(a\in A\), \(g(a)\) the supremum of \(\eta(a)\) over all \(B^*\)-seminorms \(\eta\) on \(A\). A linear functional \(f\) on \(A\) is \(g\)-bounded iff \(|f|_g= \sup\{f(a):g(a)\leq 1\}\) is finite; \(D(g)\) is the set of \(g\)-bounded functionals with \(|f|_g\leq 1\).
openaire   +2 more sources

Dual pair correspondence in physics: oscillator realizations and representations

open access: yesJournal of High Energy Physics, 2020
We study general aspects of the reductive dual pair correspondence, also known as Howe duality. We make an explicit and systematic treatment, where we first derive the oscillator realizations of all irreducible dual pairs: (GL(M, ℝ), GL(N, ℝ)), (GL(M, ℂ),
Thomas Basile   +3 more
doaj   +1 more source

The Howe duality and the Projective Representations of Symmetric Groups

open access: yes, 1998
The symmetric group S_n possesses a nontrivial central extension, whose irreducible representations, different from the irreducible representations of S_n itself, coincide with the irreducible representations of a certain algebra A_n. Recently M.~Nazarov
Sergeev, Alexander
core   +4 more sources

From tunnels to towers: Quantum scars from Lie algebras and q-deformed Lie algebras

open access: yesPhysical Review Research, 2020
We present a general symmetry-based framework for obtaining many-body Hamiltonians with scarred eigenstates that do not obey the eigenstate thermalization hypothesis.
Nicholas O'Dea   +3 more
doaj   +1 more source

Irreducible representations of Yangians

open access: yesJournal of Algebra, 2011
We give explicit realizations of irreducible representations of the Yangian of the general linear Lie algebra and of its twisted analogues, corresponding to symplectic and orthogonal Lie algebras. In particular, we develop the fusion procedure for twisted Yangians. For the non-twisted Yangian, this procedure goes back to the works of Cherednik.
Sergey Khoroshkin   +2 more
openaire   +4 more sources

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