Event

Claudius Zibrowius, Université de Sherbrooke

Friday, October 27, 2017 11:00to12:00
Room PK-5115 , Pavillon President-Kennedy, CA

Peculiar modules for 4-ended tangles

A peculiar module is a certain algebraic invariant of 4-ended tangles that I developed in my PhD thesis as a tool for studying the local behaviour of Heegaard Floer homology for knots and links. I will briefly explain its construction and describe its classification in terms of immersed curves on a 4-punctured sphere as well as a glueing formula. Finally, I will discuss some applications, such as rational tangle detection, skein relations and mutation symmetries.
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