Papers

  • Remarks on almost Gorenstein rings

    to appear in Comm. Algebra arXiv:2307.13479 (with Naoki Endo)

  • On the weakly Arf (S_2)-ifications of Noetherian rings

    (with Naoki Endo, Shiro Goto, and Shin-ichiro Iai) J. Commut. Algebra, 15 (2023), No. 3, 303--319.

  • On the ubiquity of Arf rings

    (with Ela Celikbas, Olgur Celikbas, Cătălin Ciupercă, Naoki Endo, Shiro Goto, and Ryotaro Isobe) J. …

  • 数値半群環のstretched性に関するテストエレメントについて (Japaneses)

    (with 生熊克健) 明治大学理工学部研究報告, 57 (2023), 1--9.

  • When are the rings I:I Gorenstein?

    (with Naoki Endo, Shiro Goto, and Shin-ichiro Iai) Comm. Algebra, 51 (2023), no.4, 1721-1734

  • Numerical semigroup rings of maximal embedding dimension with determinantal defining ideals

    (with Do Van Kien) Numerical semigroups, 185--196, Springer INdAM Ser., 40 (2020), Springer.

  • Efficient generation of ideals in core subalgebras of the polynomial ring k[t] over a field k

    (with Naoki Endo, Shiro Goto, and Yuki Yamamoto) Proc. Amer. Math. Soc. 148 (2020), no. 8, 3283--329…

  • On the almost Gorenstein property in the Rees algebras of contracted ideals

    (with Shiro Goto, Naoki Taniguchi, and Ken-ichi Yoshida) Kyoto J. Math. 59 (2019), no. 4, 769--785.

  • Sally modules of canonical ideals in dimension one and 2-AGL rings

    (with Tran Do Minh Chau, Shiro Goto, and Shinya Kumashiro) J. Algebra 521 (2019), 299--330.

  • Pseudo-Frobenius numbers versus defining ideals in numerical semigroup rings

    (with Shiro Goto, Do Van Kien, and Hoang Le Truong) J. Algebra 508 (2018), 1--15.

  • Almost Gorenstein Rees algebras of pg-ideals, good ideals, and powers of the maximal ideals

    (with Shiro Goto, Naoki Taniguchi, and Ken-ichi Yoshida) Michigan Math. J. 67 (2018), no. 1, 159--17…

  • The almost Gorenstein Rees algebras over two-dimensional regular local rings

    (with Shiro Goto, Naoki Taniguchi, and Ken-ichi Yoshida) J. Pure Appl. Algebra 220 (2016), no. 10, 3…

  • Uniformly Cohen-Macaulay simplicial complexes and almost Gorenstein∗ simplicial complexes

    (with Satoshi Murai) J. Algebra 455 (2016), 14--31.

  • The almost Gorenstein Rees algebras of parameters

    (with Shiro Goto, Naoki Taniguchi, and Ken-ichi Yoshida) J. Algebra 452 (2016), 263--278.

  • Almost Gorenstein rings

    (with Shiro Goto and Tran Thi Phuong) J. Algebra 379 (2013), 355--381.

  • Quasi-socle ideals in local rings with Gorenstein tangent cones

    (with Shiro Goto, Satoru Kimura, and Tran Thi Phuong) J. Commut. Algebra 1 (2009), no. 4, 603--620.

  • On finite generation of symbolic Rees rings of space monomial curves and existence of negative curves

    (with Kazuhiko Kurano) J. Algebra 322 (2009), no. 9, 3268--3290.

  • Quasi-socle ideals in Gorenstein numerical semigroups rings

    (with Shiro Goto and Satoru Kimura) J. Algebra 320 (2008), no. 1, 276--293.

  • Quasi-socle ideals in a Gorenstein local ring

    (with Shiro Goto and Ryo Takahashi) J. Pure Appl. Algebra 212 (2008), no. 5, 969--980.

  • On m-full powers of parameter ideals 

    Tokyo J. Math. 29 (2006), no. 2, 405--411.

  • 2次元単項式イデアルのRatliff-Rush閉包とRees代数のBuchsbaum性について(Japanese)

    (with 後藤四郎) 明治大学理工学部研究報告,32 (2005), 37--43.

  • 巴系イデアルの冪の整閉性と局所環の正則性について(Japanese)

    (with 後藤四郎) 明治大学理工学部研究報告, 30(2004), 7--11.

Preprint

  • Nearly Gorenstein local rings defined by maximal minors of a $2 \times n$ matrix

    arXiv:2308.04234 (with Shinya Kumashiro, Taiga Nakashima)

  • Rings with $q$-torsionfree canonical modules

    arXiv:2301.02635 (with Naoki Endo, Laura Ghezzi, Shiro Goto, Jooyoun Hong, Shin-ichiro Iai, Toshinor…

  • Ulrich ideals in the ring k[[t^5, t^11]]

    arXiv:2111.01085 (with Naoki Endo, Shiro Goto, Shin-ichiro Iai)