summary:We deal with a hyperspace selection problem in the setting of connected spaces. We present two solutions of this problem illustrating the difference between selections for the nonempty closed sets, and those for the at most two-point sets. In the first case, we obtain a characterisation of compact orderable spaces. In the latter case --- that of selections for at most two-point sets, the same selection property is equivalent to the existence of a ternary relation on the space, known as a cyclic order, and gives a characterisation of the so called weakly cyclically orderable spaces
AbstractFor every space X, let H(X) denote its hyperspace. A selection for X is a mapping σ: H(X) → ...
AbstractIn 1951 Ernest Michael wrote a definitive seminal article on hyperspaces [E. Michael, Topolo...
summary:We demonstrate that every Vietoris continuous selection for the hyperspace of at most 3-poin...
AbstractIt is demonstrated that the hyperspace of at most (n+1)-point sets has a Vietoris continuous...
AbstractIn 1951 Ernest Michael wrote a definitive seminal article on hyperspaces [E. Michael, Topolo...
AbstractWe study properties of Hausdorff spaces X which depend on the variety of continuous selectio...
We study properties of Hausdorff spaces X which depend on the variety of continuous selections for t...
summary:It is proved that for a zero-dimensional space $X$, the function space $C_p(X,2)$ has a Viet...
AbstractIt is demonstrated that the hyperspace of at most (n+1)-point sets has a Vietoris continuous...
Abstract. We consider a special order-like relation on the subsets of a given space X, which is gene...
Abstract. The present paper extends the idea to characterize topological prop-erties of a space X by...
We study continuous selectors σ: Fτ (X) → X where Fτ (X) is a hyperspace of non-empty closed subsets...
[EN] Bertacchi and Costantini obtained some conditions equivalent to the existence of continuous sel...
[EN] Bertacchi and Costantini obtained some conditions equivalent to the existence of continuous sel...
[EN] The theory of hyperspaces has attracted the attention of many mathematicians who have found a l...
AbstractFor every space X, let H(X) denote its hyperspace. A selection for X is a mapping σ: H(X) → ...
AbstractIn 1951 Ernest Michael wrote a definitive seminal article on hyperspaces [E. Michael, Topolo...
summary:We demonstrate that every Vietoris continuous selection for the hyperspace of at most 3-poin...
AbstractIt is demonstrated that the hyperspace of at most (n+1)-point sets has a Vietoris continuous...
AbstractIn 1951 Ernest Michael wrote a definitive seminal article on hyperspaces [E. Michael, Topolo...
AbstractWe study properties of Hausdorff spaces X which depend on the variety of continuous selectio...
We study properties of Hausdorff spaces X which depend on the variety of continuous selections for t...
summary:It is proved that for a zero-dimensional space $X$, the function space $C_p(X,2)$ has a Viet...
AbstractIt is demonstrated that the hyperspace of at most (n+1)-point sets has a Vietoris continuous...
Abstract. We consider a special order-like relation on the subsets of a given space X, which is gene...
Abstract. The present paper extends the idea to characterize topological prop-erties of a space X by...
We study continuous selectors σ: Fτ (X) → X where Fτ (X) is a hyperspace of non-empty closed subsets...
[EN] Bertacchi and Costantini obtained some conditions equivalent to the existence of continuous sel...
[EN] Bertacchi and Costantini obtained some conditions equivalent to the existence of continuous sel...
[EN] The theory of hyperspaces has attracted the attention of many mathematicians who have found a l...
AbstractFor every space X, let H(X) denote its hyperspace. A selection for X is a mapping σ: H(X) → ...
AbstractIn 1951 Ernest Michael wrote a definitive seminal article on hyperspaces [E. Michael, Topolo...
summary:We demonstrate that every Vietoris continuous selection for the hyperspace of at most 3-poin...