>> Dobrushin Mathematics Laboratory Seminar >> Previous Seminars
2014
September 9
Igor Krichever
Pentagram map, Frieze patterns and commuting difference operators
January 21
Yanqi Qiu (AixMarseille Université)
The UMD Constants for Mixed Normed Lebesgue Spaces
After a short introduction of the unconditional martingale property (UMD property) for Banach spaces, I will give an estimate for the constants appeared in the vectorvalued martingales" inequalities for defining this property. This estimate yields in particular a very natural construction of a Banach space (in fact Banach lattice) which is superreflexive but does not have the UMD property.
Ilya Shkredov
On Quantitative Version of BeurlingHelson Theorem
