Ultrafilter! Waffle! (ultrawaffle) wrote,
  • Mood: busy

FLMPotD

Find a commutative ring R, a multiplicative subset S \subset R, and finitely generated R-modules M and N such that the natural map S^{-1}Hom(M,N) \to Hom(S^{-1}M,S^{-1}N) is not an isomorphism.
Tags: flmpotd
  • Post a new comment

    Error

    default userpic
  • 2 comments