Nilpotent Orbits of Linear and Cyclic Quivers and Kazhdan-lusztig Polynomials of Type A
نویسنده
چکیده
The intersection cohomologies of closures of nilpotent orbits of linear (respectively, cyclic) quivers are known to be described by KazhdanLusztig polynomials for the symmetric group (respectively, the affine symmetric group). We explain how to simplify this description using a combinatorial cancellation procedure, and we derive some consequences for representation theory.
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تاریخ انتشار 2007