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math.AG2023
Logarithmic Hochschild co/homology via formality of derived intersections
Márton Hablicsek, Leo Herr, Francesca Leonardi
We define log Hochschild co/homology for log schemes that behaves well for simple normal crossing pairs or toroidal singularities. We prove a Hochschild-Kostant-Rosenberg i…
math.AG2023
Higher Genus Quantum --theory
You-Cheng Chou, Leo Herr, Y. -P. Lee
We prove genus invariants in quantum -theory are determined by genus zero invariants of a smooth stack in the spirit of K.~Costello's result in Gromov--Witten theory.