Working in the context of symmetric spectra, we describe and study a
homotopy completion tower for algebras and left modules over operads in
the category of modules over a commutative ring spectrum (eg structured
ring spectra). We prove a strong convergence theorem that shows that for
–connected algebras and
modules over a
–connected
operad, the homotopy completion tower interpolates (in a strong sense) between
topological Quillen homology and the identity functor.
By systematically exploiting strong convergence, we prove several theorems
concerning the topological Quillen homology of algebras and modules over operads.
These include a theorem relating finiteness properties of topological Quillen
homology groups and homotopy groups that can be thought of as a spectral algebra
analog of Serre’s finiteness theorem for spaces and H R Miller’s boundedness result
for simplicial commutative rings (but in reverse form). We also prove absolute and
relative Hurewicz Theorems and a corresponding Whitehead Theorem for topological
Quillen homology. Furthermore, we prove a rigidification theorem, which we use
to describe completion with respect to topological Quillen homology (or
–completion).
The
–completion
construction can be thought of as a spectral algebra analog of Sullivan’s
localization and completion of spaces, Bousfield and Kan’s completion of spaces
with respect to homology and Carlsson’s and Arone and Kankaanrinta’s
completion and localization of spaces with respect to stable homotopy. We prove
analogous results for algebras and left modules over operads in unbounded chain
complexes.
Keywords
topological Quillen homology, symmetric spectra, structured
ring spectra, spectral algebra, completion, operads, model
category
Department of Mathematics
Purdue University
West Lafayette, IN 47907
USA
and
Department of Mathematics
University of Western Ontario
London
Ontario, N6A 5B7
Canada