aCM sheaves of pure rank two on reducible hyperquadrics

作者：Ballico Edoardo; Huh Sukmoon^*; Pons Llopis Joan

来源：Journal of Algebra, 2017, 489: 73-90.

DOI：10.1016/j.jalgebra.2017.06.025

• Arithmetically Cohen Macaulay sheaf
• Reducible quadric hypersurface
• Wild type

We classify a special type of arithmetically Cohen-Macaulay sheaves of rank two on reducible and reduced quadric hypersurfaces. As a consequence we show that a reducible and reduced quadric surface is of wild type.

• 出版日期2017-11-1