2 papers
math.CO2026
Characteristic quasi-polynomials of deletions of Shi arrangements of type B and their period collapse
Akihiro Higashitani, Norihiro Nakashima
Characteristic quasi-polynomials are the enumerative functions counting the number of elements in the complement of hyperplane arrangements modulo positive integers. A notable phen…
math.CO2025
Characteristic quasi-polynomials of deletions of Shi arrangements of type C and type D
Akihiro Higashitani, Masato Konoike, Norihiro Nakashima +1
Characteristic quasi-polynomials enumerate the number of points in the complement of hyperplane arrangements modulo positive integers. In this paper, we compute the characteristic…