2013/09/22 by Bakry, Dominique, Orevkov, Stepan, Zani, Marguerite · 1 citation
#FOS: Mathematics #Probability (math.PR)
paper · doi:10.48550/arxiv.1309.5632
We want to describe the triplets (Ω, (g), μ) where (g) is the (co)metric associated to some symmetric second order differential operator L defined on the domain Ωof Rd and such that L is expandable on a basis of orthogonal polynomials of L2(μ), and μis some admissible measure. Up to affine transformation, we find 11 compact domains in dimension 2, and also give some non--compact cases in this dimension.