2 papers
math.CO2025
New kinds of block diagonal matching fields and toric degenerations of Grassmannians
Akihiro Higashitani, Nobukazu Kowaki
Block diagonal matching field has many previous works. In general, a coherent matching field induces a monomial order to Plücker algebra, and block diagonal matching fields are a k…
math.AC2024
Pseudo-Gorenstein edge rings and a new family of almost Gorenstein edge rings
Yuta Hatasa, Nobukazu Kowaki, Koji Matsushita
In this paper, we study edge rings and their -polynomials. We investigate when edge rings are pseudo-Gorenstein, which means that the leading coefficients of the -polynomials…