Augmentation categories in higher dimensions

Hanming Liu

Published: 2025/8/9

Abstract

For an exact symplectic manifold $M$ and a Legendrian submanifold $\Lambda$ of the contactification $M\times \mathbb{R}$, we construct the augmentation category (over a field of characteristic 2), a unital $A_\infty$-category whose objects are augmentations of the Chekanov-Eliashberg differential graded algebra. This extends the construction of the augmentation category by Ng-Rutherford-Shende-Sivek-Zaslow to contact manifolds of dimension greater than 3. This paper is a step in generalising the ``augmentations are sheaves'' result of Ng-Rutherford-Shende-Sivek-Zaslow to all 1-jet spaces.