Starts 5 Dec 2014 16:30
Ends 5 Dec 2014 17:30
Central European Time
ICTP
Leonardo Building - Budinich Lecture Hall
Leonardo Building (Budinich Lecture Hall)
(Basic Notions Seminar) Abstract: Although at first the standard definitions of cohomology may seem very strange, I will show how cochain complexes and cohomology arise naturally from the seemingly-trivial study of locally constant functions on smooth manifolds. As applications, we will see that a manifold cannot retract to its boundary, and that there is no orientation-reversing diffeomorphism of CP^2.