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Letac's conjecture on the density-free characterization of Kummer and gamma distributions
Let $X$ and $Y$ be independent positive random variables, and define $U$ and $V$ by the transformation in the preceding independence property. Suppose that $U$ and $V$ are also ind…
Conjecturesolvedchange-of-measure characterization-theorems probability-distributionsarXiv posted 2 days ago

Letac's conjecture on the density-free characterization of Kummer and gamma distributions