We deal with the uniqueness problem for analytic functions sharing four distinct values in an angular domain and obtain some theorems which improve the result given by Cao and Yi [J. Math. Anal. Appl. 358 (2009)].
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-ap99-1-5,
author = {Hong-Yan Xu and Ting-Bin Cao},
title = {Uniqueness of two analytic functions sharing four values in an angular domain},
journal = {Annales Polonici Mathematici},
volume = {98},
year = {2010},
pages = {55-65},
zbl = {1206.30043},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ap99-1-5}
}
Hong-Yan Xu; Ting-Bin Cao. Uniqueness of two analytic functions sharing four values in an angular domain. Annales Polonici Mathematici, Tome 98 (2010) pp. 55-65. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ap99-1-5/