A fixed point theorem in Banach spaces over topological semifields
Slobodan Č. Nešić
Abstract
Let $X$ be a Banach space over a topological semifield and
$T_1$, $T_2\:X\to X$ two maps satisfying the condition (1). Then $T_1$ and
$T_2$ have a common fixed point.
Keywords: Banach space over a topological semifield, common fixed point,
Cauchy sequence, sequentially complete metric space.