Benjamin Hennion

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math.AG2025

Gluing invariants of Donaldson--Thomas type -- Part II: Matrix factorizations

Benjamin Hennion, Julian Holstein, Marco Robalo

This paper is a follow-up to arXiv:2407.08471. Let $X$ be a a $(- 1)$ -shifted symplectic derived Deligne--Mumford stack. Thanks to the Darboux lemma of Brav--Bussi--Joyce, $X$ is lo…

math.AG2020

Higher dimensional formal loop spaces

Benjamin Hennion

If $M$ is a symplectic manifold then the space of smooth loops $C^{\infty} (S^{1}, M)$ inherits of a quasi-symplectic form. We will focus in this article on an algebrai…