Perverse character sheaf conjecture for loop Lie algebras
Perverse character sheaf conjecture for loop Lie algebras
Let be a reductive group, let be a polar-cuspidal datum for , and let be a parahoric subgroup containing as a Levi factor. Let denote the regular semisimple locus, and let be the associated character sheaf. Perverse character sheaf conjecture. The restriction
is perverse in the sense of Bouthier--Kazhdan--Varshavsky. The conjecture extends the known perversity result for the affine Springer sheaf on the regular semisimple locus, while its validity for general polar-cuspidal data and parahoric subgroups remains open.
Sources & referencesView supporting material
Primary source
Ngo Bao Chau and Zhiwei Yun, “Character sheaves on loop Lie algebras: polar partition”, arXiv:2506.14584 (2025).
Progress summary
Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.
Solutions 0
Sign in to submit a solution.
No solutions have been posted yet.