- Vivi Padova
- Il Bo
Mercoledi' 8 settembre 2010 - Aula 2AB45 Torre Archimede
Simion Breaz (Babes-Bolyai University Cluj-Napoca, Romania)
"Dualities and self--small groups of finite torsion-free rank"
I present a family of dualities on some categories of self-small groups of finite torsion-free rank.
These dualities extend several of those in the literature (Warfield duality and Fomin-Wickless duality). The results are obtained in joint works with Ulrich Albrecht, respectively Phill Schultz.
George Ciprian Modoi (Babes-Bolyai University Cluj-Napoca, Romania)
"Approximations in homotopy category and Brown representability"
In the talk we present some relations between the existence of left (right) approximations in the category of modules or the homotopy category of modules and the representability of homological contravariant (respectively covariant) Ab-valued functors defined on homotopy category. Some examples are also discussed.
Rif. int. S. Bazzoni