Mathematics – Probability
Scientific paper
2004-10-06
Annals of Probability 2004, Vol. 32, No. 3, 2463-2476
Mathematics
Probability
Published at http://dx.doi.org/10.1214/009117904000000522 in the Annals of Probability (http://www.imstat.org/aop/) by the Ins
Scientific paper
10.1214/009117904000000522
This paper introduces a notion of 2-orthogonality for a sequence of
polynomials to give extended versions of the Meixner and Feinsilver
characterization results based on orthogonal polynomials. These new versions
subsume the Letac-Mora characterization of the real natural exponential
families having cubic variance function.
Hassairi Abdelhamid
Zarai Mohammed
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