A Partial Order on Bipartitions From the Generalized Springer Correspondence

In \cite{Lusztig}, Lusztig gives an explicit formula for the bijection between the set of bipartitions and the set $\mathcal{N}$ of unipotent classes in a spin group which carry irreducible local systems equivariant for the spin group but not equivariant for the special orthogonal group. The set \...

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Veröffentlicht in:	arXiv.org 2018-02
1. Verfasser:	Xia, Jianqiao
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Schlagworte:	Mathematics - Representation Theory
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description	In \cite{Lusztig}, Lusztig gives an explicit formula for the bijection between the set of bipartitions and the set $\mathcal{N}$ of unipotent classes in a spin group which carry irreducible local systems equivariant for the spin group but not equivariant for the special orthogonal group. The set $\mathcal{N}$ has a natural partial order and therefore induces a partial order on bipartitions. We use the explicit formula given in \cite{Lusztig} to prove that this partial order on bipartitions is the same as the dominance order appeared in Dipper-James-Murphy's work.
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title	A Partial Order on Bipartitions From the Generalized Springer Correspondence
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