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Torsion in linearized contact homology for Legendrian knots

Publication ,  Journal Article
Lipshitz, R; Ng, L
August 25, 2023

We present examples of Legendrian knots in $\mathbb{R}^3$ that have linearized Legendrian contact homology over $\mathbb{Z}$ containing torsion. As a consequence, we show that there exist augmentations of Legendrian knots over $\mathbb{Z}$ that are not induced by exact Lagrangian fillings, even though their mod $2$ reductions are.

Duke Scholars

Publication Date

August 25, 2023
 

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Lipshitz, Robert, and Lenhard Ng. “Torsion in linearized contact homology for Legendrian knots,” August 25, 2023.
Lipshitz, Robert, and Lenhard Ng. Torsion in linearized contact homology for Legendrian knots. Aug. 2023.

Publication Date

August 25, 2023