Dual canonical bases for the quantum general linear supergroup

Details Dual canonical bases for the quantum general linear supergroup Dual canonical bases for the quantum general linear supergroup

2005-10-10

arxiv.org/abs/math/0510186v1

Mathematics

Quantum Algebra

32 pages

Scientific paper

Dual canonical bases of the quantum general linear supergroup are constructed which are invariant under the multiplication of the quantum Berezinian. By setting the quantum Berezinian to identity, we obtain dual canonical bases of the quantum special linear supergroup ${\s O}_q(SL_{m\mid n})$. We apply the canonical bases to study invariant subalgebras of the quantum supergroups under left and right translations. In the case $n=1$, it is shown that each invariant subalgebra is spanned by a part of the dual canonical bases. This in turn leads to dual canonical bases for any Kac module constructed by using an analogue of Borel-Weil theorem.

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