Sunday, 19 February 2012

fa.functional analysis - On the failure of the infinite dimensional Brouwer Theorem

Let K be the closed unit ball of some infinite dimensional Banach
space, and let H be an autohomeomorphism of K, having fixed
points. Can H/2 be fixed point free ?



Also, let mathcalF := { SinmboxC(K,K),mboxFix(S)neqtextrmØ}.



Let T in mboxC(K,K) such that TSinmathcalF for all SinmathcalF
. Must T be necessarily compact ?

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