A Method for Weight Multiplicity Computation Based on Berezin Quantization

Let G be a compact semisimple Lie group and T be a maximal torus of G. We describe a method for weight multiplicity computation in unitary irreducible representations of G, based on the theory of Berezin quantization on G/T. Let Γhol(Lλ) be the reproducing kernel Hilbert space of holomorphic section...

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Published in:Symmetry, Integrability and Geometry: Methods and Applications
Date:2009
Main Author: Bar-Moshe, D.
Format: Article
Language:English
Published: Інститут математики НАН України 2009
Online Access:https://nasplib.isofts.kiev.ua/handle/123456789/149125
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Journal Title:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:A Method for Weight Multiplicity Computation Based on Berezin Quantization / D. Bar-Moshe // Symmetry, Integrability and Geometry: Methods and Applications. — 2009. — Т. 5. — Бібліогр.: 21 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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author Bar-Moshe, D.
author_facet Bar-Moshe, D.
citation_txt A Method for Weight Multiplicity Computation Based on Berezin Quantization / D. Bar-Moshe // Symmetry, Integrability and Geometry: Methods and Applications. — 2009. — Т. 5. — Бібліогр.: 21 назв. — англ.
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container_title Symmetry, Integrability and Geometry: Methods and Applications
description Let G be a compact semisimple Lie group and T be a maximal torus of G. We describe a method for weight multiplicity computation in unitary irreducible representations of G, based on the theory of Berezin quantization on G/T. Let Γhol(Lλ) be the reproducing kernel Hilbert space of holomorphic sections of the homogeneous line bundle Lλ over G/T associated with the highest weight λ of the irreducible representation πλ of G. The multiplicity of a weight m in πλ is computed from functional analytical structure of the Berezin symbol of the projector in Γhol(Lλ) onto subspace of weight m. We describe a method of the construction of this symbol and the evaluation of the weight multiplicity as a rank of a Hermitian form. The application of this method is described in a number of examples.
first_indexed 2025-11-27T04:31:34Z
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institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
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language English
last_indexed 2025-11-27T04:31:34Z
publishDate 2009
publisher Інститут математики НАН України
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spelling Bar-Moshe, D.
2019-02-19T17:33:12Z
2019-02-19T17:33:12Z
2009
A Method for Weight Multiplicity Computation Based on Berezin Quantization / D. Bar-Moshe // Symmetry, Integrability and Geometry: Methods and Applications. — 2009. — Т. 5. — Бібліогр.: 21 назв. — англ.
1815-0659
2000 Mathematics Subject Classification: 22E46; 32M05; 32M10; 53D50; 81Q70
https://nasplib.isofts.kiev.ua/handle/123456789/149125
Let G be a compact semisimple Lie group and T be a maximal torus of G. We describe a method for weight multiplicity computation in unitary irreducible representations of G, based on the theory of Berezin quantization on G/T. Let Γhol(Lλ) be the reproducing kernel Hilbert space of holomorphic sections of the homogeneous line bundle Lλ over G/T associated with the highest weight λ of the irreducible representation πλ of G. The multiplicity of a weight m in πλ is computed from functional analytical structure of the Berezin symbol of the projector in Γhol(Lλ) onto subspace of weight m. We describe a method of the construction of this symbol and the evaluation of the weight multiplicity as a rank of a Hermitian form. The application of this method is described in a number of examples.
I would like to express my sincere gratitude to R. Pnini for his kind help and support.
en
Інститут математики НАН України
Symmetry, Integrability and Geometry: Methods and Applications
A Method for Weight Multiplicity Computation Based on Berezin Quantization
Article
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spellingShingle A Method for Weight Multiplicity Computation Based on Berezin Quantization
Bar-Moshe, D.
title A Method for Weight Multiplicity Computation Based on Berezin Quantization
title_full A Method for Weight Multiplicity Computation Based on Berezin Quantization
title_fullStr A Method for Weight Multiplicity Computation Based on Berezin Quantization
title_full_unstemmed A Method for Weight Multiplicity Computation Based on Berezin Quantization
title_short A Method for Weight Multiplicity Computation Based on Berezin Quantization
title_sort method for weight multiplicity computation based on berezin quantization
url https://nasplib.isofts.kiev.ua/handle/123456789/149125
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