3 papers
math.AT2010
Quadratic forms classify products on quotient ring spectra
Alain Jeanneret, Samuel Wuethrich
We construct a free and transitive action of the group of bilinear forms Bil(I/I^2[1]) on the set of R-products on F, a regular quotient of an E-infinity ring spectrum R with F_* \…
math.AT2010
Clifford algebras from quotient ring spectra
Alain Jeanneret, Samuel Wuethrich
We give natural descriptions of the homology and cohomology algebras of regular quotient ring spectra of even E-infinity ring spectra. We show that the homology is a Clifford algeb…
math.AT2004
I-adic towers in topology
Samuel Wuethrich
A large variety of cohomology theories is derived from complex cobordism MU^*(-) by localizing with respect to certain elements or by killing regular sequences in MU_*. We study th…