I currently work on (co)homology theories arising from Hopf algebroids and operads. I also (attempt to) tackle problems in infinite group theory using topological algebra. This usually involves operads and the combinatorics of trees along with a hefty dose of homological algebra.
7 GL(V)-representation theory for a Lie bracket kernel May 25 '11
7 Rational Group Cohomology Nov 11 '09
7 Symmetric Powers, Tableau and Wreath Products Nov 17 '09
7 Posets of cosets and contractibility Jun 20 '11
6 q-deformation of the permutation group? May 13 '12
5 Cohomology of associative algebras Nov 20 '09
5 A few questions about Kontsevich formality Jul 31 '10