Multivariable cochain operations and little n-cubes

Details Multivariable cochain operations and little n-cubes Multivariable cochain operations and little n-cubes

2001-06-04

arxiv.org/abs/math/0106024v3

Mathematics

Quantum Algebra

Scientific paper

This is a revision of a paper first posted June 4, 2001. It will appear in the Journal of the AMS. In this paper we construct a small $E_\infty$ chain operad $\S$ which acts naturally on the normalized cochains $S^*X$ of a topological space. We also construct, for each $n$, a suboperad $\S_n$ which is quasi-isomorphic to the normalized singular chains of the little $n$-cubes operad. The case $n=2$ leads to a substantial simplification of our earlier proof of Deligne's Hochschild cohomology conjecture.

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