Computational Methods and Function Theory ( IF 0.6 ) Pub Date : 2021-05-05 , DOI: 10.1007/s40315-021-00388-3 Ta Thi Hoai An , Nguyen Viet Phuong
We say that two meromorphic functions f and g share a small function \(\alpha \) counting multiplicities if \(f-\alpha \) and \(g-\alpha \) admit the same zeros with the same multiplicities. Let Q be a polynomial of one variable. In [Comput. Methods Funct. Theory 17: 613-634, 2017, Theorem. 1.1], we proved that if \((Q(f))^{(k)}\) and \((Q(g))^{(k)}\) share \(\alpha \) counting multiplicities then, with suitable conditions on the degree of Q and on the number of zeros and the multiplicities of the zeros of \(Q'\), there are explicit relations between Q(f) and Q(g). Unfortunately, there is a gap at the beginning of the proof of An and Phuong (Comput. Methods Funct. Theory 17:613–634, 2017, Theorem 1.1]. We will give a way to avoid the gap. This proof can also be used to fix the gaps of other authors’ published papers listed in Schweizer (arXiv:1705.05048v2, 2017).
中文翻译:
关于亚纯函数共享小函数的引理
我们说两个亚纯函数˚F和摹 小函数 \(\阿尔法\) 计数多重如果\(F- \阿尔法\)和\(G- \阿尔法\)承认与同多重相同的零。令Q为一个变量的多项式。在[计算机。方法功能。理论17:613-634,2017,定理。1.1],我们证明了如果\((Q(f))^ {(k)} \)和\((Q(g))^ {(k)} \)共享计算乘数的\(\ alpha \),,在Q度和零个数以及\(Q'\)的零个乘数的合适条件下,在Q(f)和Q(g)之间有明确的关系。不幸的是,在An和Phuong的证明的开头有一个缺口(计算方法函数理论17:613–634,2017,定理1.1]。我们将提供一种避免这种差距的方法。用来弥补Schweizer(arXiv:1705.05048v2,2017)中列出的其他作者发表的论文之间的差距。