Document Type
Article
Publication Title
Advances in Mathematics
Abstract
There are two main approaches to the problem of realizing a Π-algebra (a graded group Λ equipped with an action of the primary homotopy operations) as the homotopy groups of a space X. Both involve trying to realize an algebraic free simplicial resolution G . of Λ by a simplicial space W ., and proceed by induction on the simplicial dimension. The first provides a sequence of André-Quillen cohomology classes in H n+2(Λ;Ω nΛ) (n≥1) as obstructions to the existence of successive Postnikov sections for W . (cf. Dwyer et al. (1995) [27]). The second gives a sequence of geometrically defined higher homotopy operations as the obstructions (cf. Blanc (1995) [8]); these were identified in Blanc et al. (2010) [16] with the obstruction theory of Dwyer et al. (1989) [25]. There are also (algebraic and geometric) obstructions for distinguishing between different realizations of Λ. In this paper we. (a)provide an explicit construction of the cocycles representing the cohomology obstructions;(b)provide a similar explicit construction of certain minimal values of the higher homotopy operations (which reduce to "long Toda brackets"); and(c)show that these two constructions correspond under an evident map. © 2012 Elsevier Inc.
First Page
777
Last Page
817
DOI
10.1016/j.aim.2012.02.009
Publication Date
6-1-2012
Recommended Citation
Blanc, David; Johnson, Mark W.; and Turner, James M., "Higher homotopy operations and André-Quillen cohomology" (2012). University Faculty Publications and Creative Works. 267.
https://digitalcommons.calvin.edu/calvin_facultypubs/267