Demazure crystals of generalized Verma modules and a flagged RSK correspondence

Details Demazure crystals of generalized Verma modules and a flagged RSK correspondence Demazure crystals of generalized Verma modules and a flagged RSK correspondence

2008-10-31

arxiv.org/abs/0810.5652v1

Mathematics

Representation Theory

Scientific paper

We prove that the Robinson-Schensted-Knuth correspondence is a $\gl_{\infty}$-crystal isomorphism between two realizations of the crystal graph of a generalized Verma module with respect to a maximal parabolic subalgebra of $\gl_{\infty}$. %This extends the previously known result that %the RSK correspondence is an isomorphism of bicrystals or double %crystals. A flagged version of the RSK correspondence is derived in a natural way by computing a Demazure crystal graph of a generalized Verma module. As an application, we discuss a relation between a Demazure crystal and plane partitions with a bounded condition.

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