Morningside Center of Mathematics
Chinese Academy of Sciences
Morningside Center of Mathematics
Chinese Academy of Sciences
Title: | Monadicity Theorem and Weighted Projective Lines of Tubular Type |
Speaker: | 陈健敏 (厦门大学) |
Time: | 2015-6-9, 14:30-16:30 |
Place: | 410 |
Abstract: | We formulate a version of Beck's monadicity theorem for abelian categories, which is applied to the equivariantization of an abelian category with respect to a finite group action. We prove that the equivariantization is compatible with the construction of quotient abelian categories by Serre subcategories. We prove that the equivariantization of the graded module category over a graded ring is equivalent to the graded module category over the same ring but with a different grading. We deduce from these results two equivalences between the category of (equivariant) coherent sheaves on a weighted projective line of tubular type and that on an elliptic curve, where the acting groups are cyclic and the two equivalences are adjoint to each other. This is joint with Xiao-Wu Chen and Zhenqiang Zhou. |
Attachment: |
中国科学院晨兴数学中心2014-2019版权所有 京ICP备05002806号
北京市海淀区中关村东路55号 邮政编码:100190
电话:86-10-82541165 Email: mcmadmin@math.ac.cn