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math.AT2022
Poincaré Complex Diagonals and the Bass trace Conjecture
John R. Klein, Florian Naef
For a finitely dominated Poincaré duality space , we show how the author's total obstruction to the existence of a Poincaré embedding of the diagonal map rela…
math.AT2022
String topology in three flavours
Florian Naef, Manuel Rivera, Nathalie Wahl
We describe two major string topology operations, the Chas-Sullivan product and the Goresky-Hingston coproduct, from geometric and algebraic perspectives. The geometric constructio…