Let X be a space with free loop space ΛX and mod two cohomology R = H*X. We construct functors and ℓ(R) together with algebra homomorphisms and . When X is 1-connected and R is a symmetric algebra we show that these are isomorphisms.
@article{bwmeta1.element.bwnjournal-article-fmv162i3p251bwm, author = {Marcel B\"okstedt and Iver Ottosen}, title = {Homotopy orbits of free loop spaces}, journal = {Fundamenta Mathematicae}, volume = {159}, year = {1999}, pages = {251-275}, zbl = {0952.55006}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv162i3p251bwm} }
Bökstedt, Marcel; Ottosen, Iver. Homotopy orbits of free loop spaces. Fundamenta Mathematicae, Tome 159 (1999) pp. 251-275. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv162i3p251bwm/
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