The notion of a strong asymptotic tract for subharmonic functions is defined. Eremenko's value b(∞,u) for subharmonic functions is introduced and it is used to provide an exact upper estimate of the number of strong tracts of subharmonic functions of infinite lower order. It is also shown that b(∞,u) ≤ π for subharmonic functions of infinite lower order.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-ap92-3-6,
author = {I. I. Marchenko and A. Szkibiel},
title = {On strong tracts of subharmonic functions of infinite lower order},
journal = {Annales Polonici Mathematici},
volume = {92},
year = {2007},
pages = {275-284},
zbl = {1257.31001},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ap92-3-6}
}
I. I. Marchenko; A. Szkibiel. On strong tracts of subharmonic functions of infinite lower order. Annales Polonici Mathematici, Tome 92 (2007) pp. 275-284. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ap92-3-6/