Erwan Brugallé: Bitangents to real plane algebraic curves

Date: 2023-06-27

Time: 15:00 - 16:00

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Erwan Brugallé, Université de Nantes


The study of bitangents of  complex plane algebraic curves is a classical subject, and their number is prescribed by the Plüker formula. Over the real the situation remains widely unexplored, mainly due to the lack of methods to tackle this problem. In this talk I will survey what I know about real bitangents of real algebraic curves, and report on some recent work joint with Cristhian Garay and Thomas Blomme.