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Algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology.

3 votes

Global Affine Flag Variety and Affine Flag Variety

Let $G$ be a split reductive group over a field $k$. Let $T\subset B$ a maximal split torus contained in a Borel. Denote by $X_*(T)$ the group of cocharacters of $T$. To every $\mu\in X_*(T)$ there is …
Timo Richarz's user avatar