The relationship between directional derivatives of generalized distance functions and the existence of generalized nearest points in Banach spaces is investigated. Let G be any nonempty closed subset in a compact locally uniformly convex Banach space. It is proved that if the one-sided directional derivative of the generalized distance function associated to G at x equals to 1 or −1, then the ...

We give quantitative versions of strong convergence results due to Baillon, Bruck and Reich for iterations of nonexpansive odd (and more general) operators in uniformly convex Banach spaces.

In this article, we investigate the structure of uniformly k $k$ -connected and -edge-connected graphs. Whereas both types have previously been studied independent each other, analyze relations between these two classes. We prove that any graph is also for ≤ 3 $k\le 3$ demonstrate not case > $k\gt . Furthermore, graphs are well understood 2 2$ it known how to construct 3-edge-connected contribu...

We introduce the notion of uniformly refinable map for compact, Hausdorff spaces, as a generalization maps originallydefined metric continua by Jo Ford (Heath) and Jack W. Rogers, Jr., Refinable maps, Colloq. Math., 39 (1978), 263-269.