Abstract
We give an algebraicization of rational S 1 S^1 -equivariant homotopy theory. There is an algebraic category of â T \mathbb {T} -systemsâ which is equivalent to the homotopy category of rational S 1 S^1 -simply connected S 1 S^1 -spaces. There is also a theory of âminimal modelsâ for T \mathbb {T} -systems, analogous to Sullivanâs minimal algebras. Each S 1 S^1 -space has an associated minimal T \mathbb {T} -system which encodes all of its rational homotopy information, including its rational equivariant cohomology and Postnikov decomposition.
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