|WikiProject Mathematics||(Rated C-class, Low-priority)|
Article super unclear as to what the principle even is.
From what I can tell this article gives background then never tells you what the principle is ever. It's a bad article and needs to be fixed. — Preceding unsigned comment added by 184.108.40.206 (talk) 23:25, 9 June 2017 (UTC)
A very brief description is now given in the introductory paragraph, in addition to a section in the background, labeled "the technique." Phragmen-Lindelof is really better illustrated by example -- hence the inclusion of a proof sketch for the case of a strip. Alsosaid1987 (talk) 21:16, 6 January 2018 (UTC)