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math.AG2008★ 8 cited
Towards a Global Springer Theory I: The affine Weyl group action
Zhiwei Yun
We propose a generalization of Springer representations to the context of groups over a global function field. The global counterpart of the Grothendieck simultaneous resolution is…
math.AG2008
Weights of mixed tilting sheaves and geometric Ringel duality
Zhiwei Yun
We describe several general methods for calculating weights of mixed tilting sheaves. We introduce a notion called "non-cancellation property" which implies a strong uniqueness of…