Modules $M$ such that $\Ext_R^1(M,-)$ commutes with direct limits

Details Modules $M$ such that $\Ext_R^1(M,-)$ commutes with direct limits Modules $M$ such that $\Ext_R^1(M,-)$ commutes with direct limits

2011-07-04

arxiv.org/abs/1107.0557v2

Mathematics

Rings and Algebras

Major changes: more explanation and connected results are added at several places. Reference list was updated and extended

Scientific paper

We will use Watts's theorem together with Lenzing's characterization of
finitely presented modules via commuting properties of the induced tensor
functor in order to study commuting properties of Ext-covariant functors.

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