Algebraic Topology

C.Baez, D.Stevenson: The classifying space of a topological 2-group.- M.Chas, D.Sullivan: String topology in dimensions two and three.- R.Cohen: Floer homotopy theory, realizing chain complexes by module spectra, and manifolds with corners.- G.Cortinas, C.Weibel: Relative Chern characters for nilpotent ideals.- H.Esnault: Algebraic differential characters of flat connections with nilpotent residues.- C.Haesemeyer, C.Weibel: Norm varieties and the Chain Lemma.- L.Hesselholt: On the Whitehead spectrum of the circle.- J.F.Jardine: Cocycle categories.- J.Lurie: A survey of elliptic cohomology.- I.Panin, K.Pimenov, O.Röndigs: On Voevodsky's algebraic K-theory spectrum.- B.Toen, G.Vezzosi: Chern character, loop spaces and derived algebraic geometry.- V.Voevodsky: Lectures on motivic cohomology 2000/2001