Journal Article

Braided Differential Structure on Weyl Groups, Quadratic Algebras, and Elliptic Functions

Anatol N. Kirillov and Toshiaki Maeno

in International Mathematics Research Notices

Volume 2008, issue Published in print January 2008 | ISSN: 1073-7928
Published online January 2008 | e-ISSN: 1687-0247 | DOI: https://dx.doi.org/10.1093/imrn/rnn046
Braided Differential Structure on Weyl Groups, Quadratic Algebras, and Elliptic Functions

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We discuss a class of generalized divided difference operators which give rise to a representation of Nichols–Woronowicz algebras associated to Weyl groups. For the root system of type A, we also study the condition for the deformations of the Fomin–Kirillov quadratic algebra, which is a quadratic lift of the Nichols–Woronowicz algebra, to admit a representation given by generalized divided difference operators. The relations satisfied by the mutually commuting elements called Dunkl elements in the deformed Fomin–Kirillov algebra are determined. The Dunkl elements correspond to the truncated elliptic Dunkl operators via the representation given by the generalized divided difference operators.

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Subjects: Mathematics ; Pure Mathematics

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