Etienne Ghys (Ecole Normale Superieure Lyon, France)
13 April 2012, 16:00 to 17:00
Homi Bhabha Auditorium, TIFR, Mumbai
Some interesting questions about surfaces have been studied mathematically for centuries. For example, in 1772 Euler characterised the surfaces that can be covered with paper, allowing bending but not stretching, cutting or wrinkling. For cloth in place of paper, it would be a different question,...more