2 papers
math.AG2026
Counting points on braid varieties and the Deligne--Simpson problem
Masoud Kamgarpour, Bailey Whitbread
We solve the isoclinic Deligne--Simpson problem for exceptional groups, completing a program initiated by Sage et al. and Jakob--Yun. As a by-product, we obtain new examples of phy…
math.AG2026
Counting points on generic character varieties
Masoud Kamgarpour, GyeongHyeon Nam, Bailey Whitbread +1
We count points on character varieties associated with punctured surfaces and regular semisimple generic conjugacy classes in reductive groups. We find that the number of points ar…