On the product formula on non-compact Grassmannians

Piotr Graczyk, Patrice Sawyer

We study the absolute continuity of the convolution ${\delta }_{e^X}^{♮}\star {\delta }_{e^Y}^{♮}$ of two orbital measures on the symmetric space $SO_0(p,q)/SO(p)\timesSO(q)$, $q>p$. We…