9th Meeting on
Contemporary Mathematics
April 25-26, 2018

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Speaker:
Étienne Ghys
(École Normale Supérieure de Lyon)

Title:
The topology of singular points of real analytic curves

Abstract:

In the neighborhood of a singular point, a germ of 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 mini course 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.

Program:

14:00-15:30
16:00-17:30
Wednesday
April 25

1st Lecture Coffee Break
Colloquium
Thursday
April 26

2nd Lecture Coffee Break 3rd Lecture

Location: Lecture Hall 1, IPM Niavaran Building,
Niavaran Square, Tehran
Registration:
The attendance is free, but requires registration.
Please fill out the registration form and
send its text to  gt@ipm.ir  with the subject "MCM9".
Poster

School of Mathematics,
IPM - Institute for Research in Fundamental Sciences
Niavaran Building, Niavaran Square, Tehran, Iran
Tel: +98 21 222 90 928
Organizers:
E. Eftekhary
M. Nassiri