Homogeneous maximizers of the Blaschke--Santalo-type functionals

Abstract

We study Blaschke--Santal{ó}-type inequalities for $N\ge 2$ sets (functions) and a special class of cost functions. In particular, we prove new results about the reduction of the maximization problem for the Blaschke--Santal{ó}-type functional to the homogeneous case (functional inequalities on the sphere) and prove new inequalities for $N>2$ sets by the symmetrization argument. We also discuss the links to the multimagrinal optimal transportation problem and the related sharp transportation-information inequalities.