https://www.nokia.com/bell-labs/publications-and-media/publications/the-alexandroff-urysohn-square-and-the-fixed-point-property/
The Alexandroff-Urysohn Square and the Fixed Point Property | Nokia.com
Every continuous function of the Alexandroff-Urysohn Square into itself has a fixed point. This follows from G. S. Young's general theorem (1946) that...
fixed point propertyalexandroffurysohnsquarenokia
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