The Whiteman Memorial Mathematics Lectures: Singularities of planar analytic curves

Tuesday, April 30, 2019 at 2:00pm to 3:00pm

This is a past event.

Kaprielian Hall (KAP), 414
3620 South Vermont Avenue, Los Angeles, CA 90089

Étienne Ghys
École Normale Supérieure, Lyon, France

Abstract: In the neighborhood of a singular point, a real analytic curve in the plane consists of a finite number of branches. Each of these branches intersects a small circle around the singular point in two points. Therefore, the local topology is described by a chord diagram: an even number of points on a circle paired two by two. Not all chord diagrams come from a singular point. The main purpose of this talk is to give an complete description of those «  analytic » chord diagrams. On our way, we shall meet some interesting concepts from computer science, graph theory and operads.

Event Type

Lecture / Talk / Workshop, Event Highlights


University Park Campus

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