2 papers
math.RT2025
Parabolic geometric Eisenstein series and constant term functors
Joakim Faergeman, Andreas Hayash
We prove a compatibility between parabolic restriction of Whittaker sheaves and restriction of representations under the geometric Casselman-Shalika equivalence. To do this, we est…
math.AG2025
Semi-infinite flags and Zastava spaces
Andreas Hayash
We give an interpretation of the semi-infinite intersection cohomology sheaf associated to a semisimple simply-connected algebraic group in terms of finite-dimensional geometry. Sp…