A Torsion-Free Milnor-Moore Theorem

Details A Torsion-Free Milnor-Moore Theorem A Torsion-Free Milnor-Moore Theorem

2001-03-30

arxiv.org/abs/math/0103223v2

Mathematics

Algebraic Topology

12 pages, error corrected, some new ramifications discussed

Scientific paper

Let \Omega X be the space of Moore loops on a finite, q-connected, n-dimensional CW complex X, and let R be a subring of Q containing 1/2. Let p(R) be the least non-invertible prime in R. For a graded R-module M of finite type, let FM = M / Torsion M. We show that the inclusion of the sub-Lie algebra P of primitive elements of FH_*(\Omega X;R) induces an isomorphism of Hopf algebras UP = FH_*(\Omega X;R), provided p(R) > n/q - 1. Furthermore, the Hurewicz homomorphism induces an embedding of F(\pi_*(\Omega X)\otimes R) in P, with torsion cokernel. As a corollary, if X is elliptic, then FH_*(\Omega X;R) is a finitely-generated R-algebra.

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