On n-coherent rings, n-hereditary rings and n-regular rings

Document Type: Research Paper



We observe some new characterizations of $n$-presented modules. Using the concepts of $(n,0)$-injectivity and $(n,0)$-flatness of modules, we also present some characterizations of right $n$-coherent rings, right $n$-hereditary rings, and right $n$-regular rings.


Volume 37, No. 4
November and December 2011
Pages 251-267
  • Receive Date: 13 February 2009
  • Revise Date: 16 August 2010
  • Accept Date: 16 August 2010