|Affiliation:||l'École Normale Supérieure de Lyon|
|Date:||Tuesday, October 29|
|Time/Room:||6:30pm - 8:00pm/Dilworth Room|
In 1772 Euler characterized the surfaces that can be covered with paper, allowing bending but not tretching, cutting or wrinkling. For cloth in place of paper, it would be a different question, as cloth is more flexible, and that was answered by Chebyshev in 1878. In this talk we shall see how a ball can be clothed. The modern developments and unsolved problems on the theme will be discussed, through a blend of theory, applications, and pictures.