Degree

Doctor of Philosophy (PhD)

Department

Department of Mathematics

Document Type

Dissertation

Abstract

Given a Legendrian knot in (R^3, ker(dz − ydx)) one can assign a combinatorial invariants called ruling polynomials. These invariants have been shown to recover not only a (normalized) count of augmentations but are also closely related to a categorical count of augmentations in the form of the homotopy cardinality of the augmentation category. In this article, we prove that that the homotopy cardinality of the n-dimensional represen- tation category is a multiple of the n-colored ruling polynomial. Along the way, we establish that two n-dimensional representations are equivalent in the representation category if they are “conjugate homotopic”. We also provide some applications to Lagrangian concordance.

Date

3-21-2024

Committee Chair

Shea Vela-Vick

Available for download on Saturday, March 22, 2025

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