English

Comparing complexities of pairs of modules

Commutative Algebra 2009-11-25 v1

Abstract

Let RR be a local ring and M,NM,N be finitely generated RR-modules. The complexity of (M,N)(M,N), denoted by \cxxRMN\cxx RMN, measures the polynomial growth rate of the number of generators of the modules \ExtnRMN\Ext nRMN. In this paper we study several basic equalities and inequalities involving complexities of different pairs of modules.

Keywords

Cite

@article{arxiv.0911.4543,
  title  = {Comparing complexities of pairs of modules},
  author = {Hailong Dao and Oana Veliche},
  journal= {arXiv preprint arXiv:0911.4543},
  year   = {2009}
}
R2 v1 2026-06-21T14:15:14.777Z