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Nazaret Bruno

Publications and source records attributed to Nazaret Bruno.

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Metrization of probabilistic metric spaces. Applications to fixed point theory and Arzela-Ascoli type theorem

Schweizer, Sklar and Thorp proved in 1960 that a Menger space $(G,D,T)$ under a continuous $t$-norm $T$, induce a natural topology $τ$ wich is metrizable. We extend this result to any probabilistic metric space $(G,D,\star)$ provided that the triangle function $\star$ is continuous. We prove in this case, that the topological space $(G,τ)$ is uniformly homeomorphic to a (deterministic) metric space $(G,σ_D)$ for some canonical metric $σ_D$ on $G$. As applications, we extend the fixed point theorem of Hicks to probabilistic metric spaces which are not necessarily Menger spaces and we prove a probabilistic Arzela-Ascoli type theorem.

math.FA

Probabilistic Arzela-Ascoli theorem

We prove that, in the space of all probabilistic continuous functions from a probabilistic metric space G to the set $Δ$ + of all cumulative distribution functions vanishing at 0, the space of all 1-Lipschitz functions is compact if and only if the space G is compact. This gives a probabilistic Arzela-Ascoli type Theorem.

math.FA