Legendre Düğümlerin Değişmezleri

Abstract

A knot that is everywhere tangent to the contact planes is called a Legendrian knot. There are two types of Legendrian knots in overtwisted contact 3-manifolds: Loose and non-loose Legendrian knots. In the thesis, we study and give a survey on the depth and the tension invariants that are defined by Baker and Onaran for Legendrian knots in overtwisted contact structures.