Die Dozenten der Informatik-Institute der Technischen Universität Braunschweig laden im Rahmen des Informatik-Kolloquiums zu folgendem Vortrag ein:

Enrico Vitale, Universite Louvain-la-Neuve, Belgien: On Whitehead product of derivations

Beginn: 30.05.2005, 17:00 Uhr Ort: TU Braunschweig, Informatikzentrum, Mühlenpfordtstraße 23, 3. OG, Raum 349 Webseite: http://www.cs.tu-bs.de/kolloquium/vitale.htm

Non-abelain cohomology of groups is based on the notion of derivation of a group G with values in a G-group H. We provide an analysis of the Whitehead Theorem stating that if H is a G-crossed module, then the set of derivations is a monoid. We revisit this theorem using the fact that crossed modules correspond to internal groupoids in the category of groups, and also to strict categorical groups.