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On the Conditions for a Special Entire Function Related to the Partial Theta-Function and the q -Kummer Functions to Belong to the Laguerre–Pólya Class
Computational Methods and Function Theory ( IF 2.1 ) Pub Date : 2021-02-06 , DOI: 10.1007/s40315-021-00361-0 Thu Hien Nguyen
中文翻译:
关于与theta函数和q -Kummer函数有关的属于Laguerre-Pólya类的特殊整函数的条件
更新日期:2021-02-07
Computational Methods and Function Theory ( IF 2.1 ) Pub Date : 2021-02-06 , DOI: 10.1007/s40315-021-00361-0 Thu Hien Nguyen
In this paper, we discuss the conditions for the function
$$\begin{aligned} F_a(z) =\sum _{k=0}^\infty \frac{z^k}{(a+1)(a^2+1) \cdots (a^k+1)},\quad a >1, \end{aligned}$$to belong to the Laguerre–Pólya class, or to have only real zeros.
中文翻译:
关于与theta函数和q -Kummer函数有关的属于Laguerre-Pólya类的特殊整函数的条件
在本文中,我们讨论了该函数的条件
$$ \ begin {aligned} F_a(z)= \ sum _ {k = 0} ^ \ infty \ frac {z ^ k} {(a + 1)(a ^ 2 + 1)\ cdots(a ^ k + 1)},\ a大于1,\ end {aligned} $$属于Laguerre–Pólya类,或仅具有实零。