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A fixed-point theorem is a result saying that a function $F$ will have at least one fixed point (a point $x$ for which $F(x) = x$), under some conditions on $F$ that can be stated in general terms.

6 votes

Is Schauder's conjecture resolved?

There is R. Cauty paper from 2012 titled 'Un theoreme de Lefschetz-Hopf pour les fonctions a iterees compactes' which from what I heard was reviewed to establish a correct proof of Schauder's conjec …
jaco's user avatar
  • 161
2 votes
1 answer
282 views

Fixed point theorem for a nonconvex set in a Banach space

Generally speaking, I am looking for a generalization of the Schauder fixed point theorem, which applies to the situation described briefly below. All references I read (e.g. E. Zeider 'Nonlinear Fun …
jaco's user avatar
  • 161