Papers
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Remarks on almost Gorenstein rings
to appear in Comm. Algebra arXiv:2307.13479 (with Naoki Endo)
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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.
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On the ubiquity of Arf rings
(with Ela Celikbas, Olgur Celikbas, Cătălin Ciupercă, Naoki Endo, Shiro Goto, and Ryotaro Isobe) J. …
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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.
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When are the rings I:I Gorenstein?
(with Naoki Endo, Shiro Goto, and Shin-ichiro Iai) Comm. Algebra, 51 (2023), no.4, 1721-1734
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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.
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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…
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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.
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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.
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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.
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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…
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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…
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Uniformly Cohen-Macaulay simplicial complexes and almost Gorenstein∗ simplicial complexes
(with Satoshi Murai) J. Algebra 455 (2016), 14--31.
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The almost Gorenstein Rees algebras of parameters
(with Shiro Goto, Naoki Taniguchi, and Ken-ichi Yoshida) J. Algebra 452 (2016), 263--278.
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Almost Gorenstein rings
(with Shiro Goto and Tran Thi Phuong) J. Algebra 379 (2013), 355--381.
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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.
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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.
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Quasi-socle ideals in Gorenstein numerical semigroups rings
(with Shiro Goto and Satoru Kimura) J. Algebra 320 (2008), no. 1, 276--293.
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Quasi-socle ideals in a Gorenstein local ring
(with Shiro Goto and Ryo Takahashi) J. Pure Appl. Algebra 212 (2008), no. 5, 969--980.
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On m-full powers of parameter ideals
Tokyo J. Math. 29 (2006), no. 2, 405--411.
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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.
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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
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Nearly Gorenstein local rings defined by maximal minors of a $2 \times n$ matrix
arXiv:2308.04234 (with Shinya Kumashiro, Taiga Nakashima)
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Rings with $q$-torsionfree canonical modules
arXiv:2301.02635 (with Naoki Endo, Laura Ghezzi, Shiro Goto, Jooyoun Hong, Shin-ichiro Iai, Toshinor…
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Ulrich ideals in the ring k[[t^5, t^11]]
arXiv:2111.01085 (with Naoki Endo, Shiro Goto, Shin-ichiro Iai)