Gail Letzter 
Invariant Differential Operators for Quantum Symmetric Spaces [PDF ebook] 

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This paper studies quantum invariant differential operators for quantum symmetric spaces in the maximally split case. The main results are quantum versions of theorems of Harish-Chandra and Helgason: There is a Harish-Chandra map which induces an isomorphism between the ring of quantum invariant differential operators and the ring of invariants of a certain Laurent polynomial ring under an action of the restricted Weyl group. Moreover, the image of the center under this map is the entire invariant ring if and only if the underlying irreducible symmetric pair is not of four exceptional types. In the process, the author finds a particularly nice basis for the quantum invariant differential operators that provides a new interpretation of difference operators associated to Macdonald polynomials.

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Format PDF ● Pages 90 ● ISBN 9781470405090 ● Publisher American Mathematical Society ● Downloadable 3 times ● Currency EUR ● ID 6613091 ● Copy protection Adobe DRM
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