Kumar's criterion modulo p

Abstract

We prove that equivariant multiplicities may be used to determine whether attractive fixed points on T-varieties are p-smooth. This gives a combinatorial criterion for the determination of the p-smooth locus of Schubert varieties for all primes p.

20 pages, 1 TiKZ figure. DVI may not display correctly, PDF is preferred

References in corpus (4)

• Parity Sheaves
• Decomposition numbers for perverse sheaves
• Cohomology of the minimal nilpotent orbit
• Perverse sheaves and modular representation theory

Cited by in corpus (1)

• Billey-Postnikov decompositions and the fibre bundle structure of Schubert varieties