Kohji Yanagawa

activity

19982022

most citedDualizing complex of the face ring of a simplicial poset

2 citations · 12 across the 34 of their papers we have counts for

collaborators

36 papers

math.AC2022

Gröbner bases of radical Li-Li type ideals associated with partitions

Xin Ren, Kohji Yanagawa

For a partition $λ$ of $n$ , the _Specht ideal_ $I_{λ} \subset K [x_{1}, \dots, x_{n}]$ is the ideal generated by all Specht polynomials of shape $λ$ . In their unpublished manuscript, Haim…

math.AC2022

Elementary construction of the minimal free resolution of the Specht ideal of shape $(n - d, d)$

Kosuke Shibata, Kohji Yanagawa

Let $K$ be a field with $char (K) = 0$ . For a partition $λ$ of $n \in N$ , let $I_{λ}^{Sp}$ be the ideal of $R = K [x_{1}, \dots, x_{n}]$ generated by all Specht polynomials…

math.AC2022

Gröbner fans of Specht ideals

Hidefumi Ohsugi, Kohji Yanagawa

In this paper, we give the Gröbner fan and the state polytope of a Specht ideal $I_{λ}$ explicitly. In particular, we show that the state polytope of $I_{λ}$ for a partition $λ=(λ_1, \…

math.AC2021

A note on the reducedness and Gröbner bases of Specht ideals

Satoshi Murai, Hidefumi Ohsugi, Kohji Yanagawa

The Specht ideal of shape $λ$ , where $λ$ is a partition, is the ideal generated by all Specht polynomials of shape $λ$ . Haiman and Woo proved that these ideals are reduced and foun…

math.AC2020★ 2 cited

Elementary construction of minimal free resolutions of the Specht ideals of shapes $(n - 2, 2)$ and $(d, d, 1)$

Kosuke Shibata, Kohji Yanagawa

For a partition $λ$ of $n \in N$ , let $I_{λ}^{Sp}$ be the ideal of $R = K [x_{1}, \dots, x_{n}]$ generated by all Specht polynomials of shape $λ$ . We assume that ${\rm char}(K)=…

math.AC2020★ 2 cited

Regularity of Cohen-Macaulay Specht ideals

Kosuke Shibata, Kohji Yanagawa

For a partition $λ$ of $n \in N$ , let $I_{λ}^{Sp}$ be the ideal of $R = K [x_{1}, \dots, x_{n}]$ generated by all Specht polynomials of shape $λ$ . In the previous paper, the se…

Gröbner bases of radical Li-Li type ideals associated with partitions

Elementary construction of the minimal free resolution of the Specht ideal of shape (n−d,d)

Gröbner fans of Specht ideals

A note on the reducedness and Gröbner bases of Specht ideals

Elementary construction of minimal free resolutions of the Specht ideals of shapes (n−2,2) and (d,d,1)

Regularity of Cohen-Macaulay Specht ideals

Elementary construction of the minimal free resolution of the Specht ideal of shape $(n - d, d)$

Elementary construction of minimal free resolutions of the Specht ideals of shapes $(n - 2, 2)$ and $(d, d, 1)$