Browsing Jeremy Haefner (2008 - ) by Author "Del Rio, Angel"

Now showing items 1-3 of 3

    • Actions of picard groups on graded rings 

      Haefner, Jeremy; Del Rio, Angel (Elsevier, 1999)
      No abstract found.

    • The Globalization problem for inner automorphisms and Skolem-Noether theorems 

      Haefner, Jeremy; Del Rio, Angel (World Science, 2003-07)
      We investigate the circumstances under which an inner automorphism of a ring with local units can be built from “local” information. Specifically, we consider three natural “inner” type properties for an automorphism of ...

    • The Isomorphism problem for incidence rings 

      Abrams, Gene; Haefner, Jeremy; Del Rio, Angel (University of California, 1999)
      Let P and P’ be finite preordered sets, and let R be a ring for which the number of nonzero summands in a direct decomposition of the regular module RR is bounded. We show that if the incidence rings I(P;R) and I(P’;R) ...