On the Multiplicative Structure of Topological Hochschild Homology
arXiv:math/0410367 · doi:10.2140/agt.2007.7.1633
Abstract
We show that the topological Hochschild homology THH(R of an E_n-ring spectrum R is an E_{n-1}-ring spectrum. The proof is based on the fact that the tensor product of the operad Ass for monoid structures and the the little n-cubes operad is an E_{n+1}-operad, a result which is of independent interest.
19 pages. Revised version with complete proofs
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