English

Gr\"obner bases of radical Li-Li type ideals associated with partitions

Commutative Algebra 2023-06-06 v4

Abstract

For a partition λ\lambda of nn, the _Specht ideal_ IλK[x1,,xn]I_\lambda \subset K[x_1, \ldots, x_n] is the ideal generated by all Specht polynomials of shape λ\lambda. In their unpublished manuscript, Haiman and Woo showed that IλI_\lambda is a radical ideal, and gave its universal Gr\"obner bases (recently, Murai et al. published a quick proof of this result). On the other hand, an old paper of Li and Li studied analogous ideals, while their ideals are not always radical. In the present paper, we introduce a class of ideals which generalizes both Specht ideals and _radical_ Li-Li ideals, and study their radicalness and Gr\"obner bases.

Keywords

Cite

@article{arxiv.2210.04762,
  title  = {Gr\"obner bases of radical Li-Li type ideals associated with partitions},
  author = {Xin Ren and Kohji Yanagawa},
  journal= {arXiv preprint arXiv:2210.04762},
  year   = {2023}
}

Comments

Exposition revised, especially, Introduction extended and Lemma 3.10 added. 17 pages. Comments welcome