Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9493153 | Journal of Algebra | 2005 | 49 Pages |
Abstract
In this case, we show that C is isomorphic to the (co)tensor coalgebra TFâ¡(M) associated to the Ext-species of C, where F is the direct sum of the division algebras Fj=EndCS(j), M=âi,jâICMji, and Mji=HomFi(ExtC1(S(i),S(j)),Fi). We also describe the Auslander-Reiten quiver Î(C-comod) and the structure of the category C-comod of left C-comodules of finite dimension.
Related Topics
Physical Sciences and Engineering
Mathematics
Algebra and Number Theory
Authors
Justyna Kosakowska, Daniel Simson,