The Phantom cover of a module


Il Professor Ivo Herzog, dalla Ohio State University, terrà una conferenza dal titolo "The Phantom cover of a module" il giorno Venerdì 13 Luglio alle ore 17.00 in aula 2BC/30.

- Abstract
I will define the notion of a phantom cover of a module and prove that every module has a phantom cover. The proof is based on the theory of contravariant functors on the category of finitely presented modules, to which I shall give a brief introduction.

Rif. int. L. Salce