2 papers
math.AG2025
Fourier-Orbit Construction of GKZ-Type Systems for Commutative Linear Algebraic Groups
Go Okuyama
We study GKZ-type D-modules arising from the actions of commutative linear algebraic groups G = TU (where T is a torus and U is unipotent) on a vector space. Building on Hotta's eq…
math.AG2025
Logarithmic -hypergeometric series
Go Okuyama, Mutsumi Saito
We study the logarithmic coefficients that can occur at a fixed fake exponent in an -hypergeometric series subject to prescribed negative support conditions. Let $L=\operatornam…