Brouwer fixed-point theorem

[ brou-er fikst-point ]
/ ˈbraʊ ər ˈfɪkstˈpɔɪnt /

noun Mathematics.

the theorem that for any continuous transformation of a circle into itself, including its boundary, there is at least one point that is mapped to itself.

Origin of Brouwer fixed-point theorem

named after L. E. J. Brouwer