Birgit Richter

"On obstruction theory for E_{infty} structures"

Abstract:
Very recently Alan Robinson constructed an obstruction theory for
E_{infty} structures on ring spectra. The obstruction groups for these
multiplicative structures on a homotopy commutative ring spectrum live in
topological André-Quillen homology of the dual of the Steenrod algebra
of the spectrum. We will describe his obstruction theory and apply it to
give an easy proof that the Lubin-Tate spectra possess an E_{infty}
structure.