A combinatorial conjecture related with complex bounded symmetric domains

The Hua integral, i.e. the integral of the power $s$ of the generic norm on a bounded circled symmetric domain, is the inverse $1 / \chi(s)$ of a polynomial $\chi$ which can be expressed via the usual inariants $a$, $b$, $r$ of the associated Jordan triple. We state a conjecture about the sign of the coefficients of the expansion of $\chi(\mu s)$ in raising factorials of $s+1$. The conjecture has been checked with help of computer algebra software in many significant cases. If the conjecture is true, it would allow to compare the Bergman metric of some Hartogs domains built over bounded symmetric domains, with the Kaehler-Einstein metric of the same domains.

Guy Roos < guy.roos@normalesup.org >