Legendrian Grid Number One Knots and Augmentations of Their Differential Algebras

  • Joan E. LicataEmail author
Part of the Contributions in Mathematical and Computational Sciences book series (CMCS, volume 1)


In this article we study the differential graded algebra (DGA) invariant associated to Legendrian knots in tight lens spaces. Given a grid number one diagram for a knot in L(p,q), we show how to construct a special Lagrangian diagram suitable for computing the DGA invariant for the Legendrian knot specified by the diagram. We then specialize to L(p,p−1) and show that for two families of knots, the existence of an augmentation of the DGA depends solely on the value of p.


South Pole Lens Space Boundary Word Grid Number Differential Algebra 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  1. 1.Stanford UniversityStanfordUSA

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