A lower bound for coherences on the Brown-Peterson spectrum:
slides
Homological perturbation theory and the existence of the BRST differential:
flip-book
and
handout
An involution on the K-theory of (some) bimonoidal categories
. Slides for a talk at the
third Arolla conference on Algebraic Topology 2008
.
Brauer groups for commutative S-algebras
. Slides for a talk at the
2011 conference
Homotopy and Non-Commutative Geometry
in Tbilisi, Georgia.
Notes for a
course on category theory
(in German), winter term 2010/11.
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