On three--member power asymptotic of an entire Dirichlet series (in Ukrainian)

Conditions on the exponents of an entire Dirichlet series $F(z)=\sum_{n=0}^{\infty}a_n e^{(\sigma+it)\lambda_n}$, are found, under which the asymptotic inequalities $ \ln M (\sigma)\le T_1\sigma^{p_1}+T_2\sigma^{p_2}+(\tau+o(1))\sigma^p $ and $ \ln \mu (\sigma)\le T_1\sigma^{p_1}+T_2\sigma^{p_2}+(\tau+o(1))\sigma^p $ as $\sigma \to +\infty $ are equivalent, where $M (\sigma)=\sup\{|F(\sigma +it)|:\,t\in {\Bbb R}\}$, $\mu (\sigma)=\max\{|a_n|\exp(\sigma \lambda_n):n\geq 0\}$ and $p_1>1$, $0 < p < p_2 < p_1$, $T_1>0$, $T_2\in {\Bbb R}\backslash \{0\}$, $\tau \in {\Bbb R}\backslash \{0\}$.