Akihiro Higashitani, Koichiro Tani. Non-finitely generated monoids corresponding to finitely generated homogeneous subalgebras. Journal of Pure and Applied Algebra. 2025. 229. 1. 107854-107854
Luis Ferroni, Akihiro Higashitani. Examples and counterexamples in Ehrhart theory. EMS Surveys in Mathematical Sciences. 2024
Kieran Bhaskara, Akihiro Higashitani, Nayana Shibu Deepthi. The h-vectors of edge rings of odd cycle compositions. Journal of Algebra and Its Applications. 2024
Yunhyung Cho, Naoki Fujita, Akihiro Higashitani, Eunjeong Lee. Newton-Okounkov Polytopes of Type $$A$$ Flag Varieties of Small Ranks Arising from Cluster Structures. Proceedings of the Steklov Institute of Mathematics. 2024. 326. 1. 352-366