G-biliaison of ladder pfaffian varieties

JOURNAL OF ALGEBRA

卷:321

Article

De Negri, E.¹  Gorla, E.² 

[1] Univ Genoa, Dipartimento Matemat, I-16146 Genoa, Italy

[2] Univ Zurich, Inst Math, CH-8057 Zurich, Switzerland

关键词: G-biliaison;    Gorenstein liaison;    Pfaffian;    Ladder;    Complete intersection;    Arithmetically Gorenstein scheme;    Arithmetically Cohen-Macaulay scheme;   

DOI  :  10.1016/j.jalgebra.2008.12.026

来源: Elsevier

【 摘 要 】

The ideals generated by pfaffians of mixed size contained in a subladder of a skew-symmetric matrix of indeterminates define arithmetically Cohen-Macaulay, projectively normal, reduced and irreducible projective varieties. We show that these varieties belong to the G-biliaison class of a complete intersection. In particular, they are glicci. (C) 2009 Elsevier Inc. All rights reserved.

【 授权许可】

Free