Schauder Fixed Point Theorem
Let 
be a closed convex subset of a Banach Space and assume there exists a continuous Map 
sending to a countably compact subset 
of . Then has fixed points.
References
Iyanaga, S. and Kawada, Y. (Eds.). Encyclopedic Dictionary of Mathematics. Cambridge, MA: MIT Press, p. 543, 1980. Schauder, J. ``Der Fixpunktsatz in Funktionalräumen.'' Studia Math. 2, 171-180, 1930. Zeidler, E. Applied Functional Analysis: Applications to Mathematical Physics. New York: Springer-Verlag, 1995.
- Wallis's Problem
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- Watchman Theorem
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- Wave
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