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Homotopy invariance in string topology

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HHHW04 - Manifolds

In joint work with Nancy Hingston, we show that the Goresky-Hingston coproduct, just like the Chas-Sullivan product, is homotopy invariant. Unlike the Chas-Sullivan product, this coproduct is a “compactified operation”, coming from a certain compactification of the moduli space of Riemann surfaces. I'll give an idea of the ingredients used in the proof.

This talk is part of the Isaac Newton Institute Seminar Series series.

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