Any continuous function has a fixed point, where
is the unit -ball.
Harvey Mudd College Mathematics Department. "Mudd Math Fun Facts: Brouwer Fixed Point Theorem." http://www.math.hmc.edu/funfacts/ffiles/20002.7.shtml.
Kannai, Y. "An Elementary Proof of the No Retraction Theorem." Amer. Math. Monthly 88, 264-268, 1981.
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has
a fixed point, where
-ball.
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129th Boolean function of x,y,z
