English

A bordered Legendrian contact algebra

Symplectic Geometry 2012-05-01 v2

Abstract

Sivek proves a "van Kampen" decomposition theorem for the combinatorial Legendrian contact algebra (also known as the Chekanov-Eliashberg algebra) of knots in standard contact R3\R^3 . We prove an analogous result for the holomorphic curve version of the Legendrian contact algebra of certain Legendrians submanifolds in standard contact J1(M).J^1(M). This includes all 1- and 2-dimensional Legendrians, and some higher dimensional ones. We present various applications including a Mayer-Vietoris sequence for linearized contact homology similar to Sivek's and a connect sum formula for the augmentation variety introduced by Ng. The main tool is the theory of gradient flow trees developed by Ekholm.

Keywords

Cite

@article{arxiv.1204.1962,
  title  = {A bordered Legendrian contact algebra},
  author = {John G. Harper and Michael G. Sullivan},
  journal= {arXiv preprint arXiv:1204.1962},
  year   = {2012}
}

Comments

20 pages, 4 figures. In this version, Theorem 4.6 on Poincar\'e Polynomials has been removed

R2 v1 2026-06-21T20:46:49.908Z