If $X∼\textrm{Gamma}(a,b_1)$ and $Y∼\textrm{Gamma}(a,b_2)$, $X$ and $Y$ are independent, what is the distribution of $X-Y$?
2026-05-14 05:27:15.1778736435
What's the distribution of the difference of two gamma distributions? (the two gamma have same shape parameters)
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