中文

分次斜扩张的Ext代数

环与代数 2017-08-29 v2

摘要

本文中,我们研究分次斜扩张的Ext代数。对于一个连通分次代数AA和分次自同构σ\sigma,我们分析分次斜扩张A[z;σ]A[z;\sigma]的Ext代数的Yoneda积,并证明该Ext代数作为结合代数是AA的Ext代数与多项式代数k[z]k[z]的Ext代数的一个RR-smash积。

关键词

引用

@article{arxiv.1707.01610,
  title  = {Ext-algebras of graded skew extensions},
  author = {Y. Shen and X. Wang and G. -S. Zhou},
  journal= {arXiv preprint arXiv:1707.01610},
  year   = {2017}
}

备注

The content of A-infinity structures has been removed from the first version, since it does not seem to be true in the general setting