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12 results on '"Numata, Takahiro"'

1. Almost Gorenstein simplicial semigroup rings

Author

Eto, Kazufumi, Matsuoka, Naoyuki, Numata, Takahiro, and Watanabe, Kei-ichi

Subjects
Mathematics - Commutative Algebra, Primary 13F65, Secondary 13C14, 13A02, 20M25
Abstract

We give a criterion for almost Gorenstein property for semigroup rings associated with simplicial semigroups. We extend Nari's theorem for almost symmetric numerical semigroups to simplicial semigroups with higher rank. By this criterion, we determine $2$-dimensional normal semigroup rings which have ``Ulrich elements'' defined in [Herzog-Jafari-Stamate].

Published
2024

2. Genus of numerical semigroups generated by three elements

Author

Nari, Hirokatsu, Numata, Takahiro, and Watanabe, Kei-ichi

Subjects
Mathematics - Group Theory, Mathematics - Commutative Algebra
Abstract

In this paper we study numerical semigroups generated by three elements. We give a characterization of pseudo-symmetric numerical semigroups. Also, we will give a simple algorithm to get all the pseudo-symmetric numerical semigroups with give Frobenius number., Comment: 7 pages

Published
2011

12. SIRT6によるオートファジー制御と肺上皮細胞老化 (第130回成医会総会一般演題)

Author

Takasaka, Naoki, Araya, Jun, Hara, Hiromichi, Kurita, Yusuke, Kobayashi, Kenji, Ito, Saburo, Wakui, Hiroshi, Yoshii, Yutaka, Yumino, Yoko, Minagawa, Shunsuke, Kojima, Jun, Shimizu, Kenichiro, Numata, Takahiro, Kawaishi, Makoto, Kaneko, Yumi, Nakayama, Katsutoshi, Kuwano, Kazuyoshi, Asano, Hisatoshi, Marushima, Hideki, Yamashita, Makoto, Kamiya, Noriki, Odaka, Makoto, and Morikawa, Toshiaki

Abstract

article

Published
2013

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