³ . -

г 2009
70
ֲ IJв ί ֲ
$x\ge 0$ $F(x) = \sum\limits_{n=0}^{+\infty} F_{n}e^{\tau(x)\beta_{n}}$, $F_{n}\geq 0$, $(n\geq 0)$, $\tau(x)$ -- , $\{\beta_n:$ $ n\ge 0\}\subset\mathbb{R}_{+}$, $\rho>0$ $\ln F(x)$.
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