Talk:Brouwer fixed-point theorem: Difference between revisions

Revision as of 14:52, 26 July 2017

Revision as of 00:02, 27 July 2017

Line 25:

According to Lyusternik ''Convex Figures and Polyhedra'', the theorem was first proved by a Lettish mathematician named Bol. No references are provided. Anyone know what this is about?--[[User:192.35.35.36|192.35.35.36]] 00:08, 18 Feb 2005 (UTC)

== A proof using the oriented area ==

"Differentiating under the sign of integral it is not difficult to check that ''φ′(t)=0'' for all ''t''" — really? How to check it? Maybe the Milnor-Rogers-Gröger approach is meant? There, ''φ'' is polynomial (not just smooth) and appears to be constant near 0, therefore everywhere. [[User:Tsirel|Boris Tsirelson]] ([[User talk:Tsirel|talk]]) 08:51, 15 September 2015 (UTC)

== External links modified ==