Whitney's extension problems


Charles Fefferman

Princeton University

Harvard University

Thursday, February 17, 2005


Talk at 4:30 p.m. in Science Center D

Tea at 4:00 p.m. in the Math Lounge


Abstract:   Let m be a positive integer, and let f:E ---> R, where E is a given (arbitrary) subset of Rn. How can we tell whether f extends to a Cm function F on Rn? If F exists, how small can we make its Cm norm, and what can we say about its m-jet at a given point?