The Algebraic Theory of Surgery Reading Seminar


The total surgery obstruction s(X) of a finite Poincaré complex X of formal dimension n is an element of a certain abelian group Sn(X) with the property that s(X) = 0 if and only if X is homotopy equivalent to a closed n-dimensional topological manifold. Both the definition of s(X) and the proof of the above property require a substantial amount of… (More)


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