Results 111 to 120 of about 3,669 (222)

C1(X) on the edge of C2(X)

open access: yesApplied General Topology
Given a continuum X and a positive integer n, let Cn(X) be the hyperspace consisting of all nonempty closed subsets of X having at most n components. For a subcontinuum A of X having empty interior, consider the following properties: A is a subcontinuum ...
Javier Camargo   +2 more
doaj   +1 more source

DENDRITES WITH UNIQUE HYPERSPACE

open access: yes, 2007
The main purpose of this paper is to prove the following theorem: A dendrite which is not an arc has unique hyperspace of subcontinua if its set of end points is ...
David Herrera-carrasco
core  

On w-unicoherence, top-irreducibility and Whitney levels near the top

open access: yesApplied General Topology
Given a metric continuum X, we consider C(X) as the collection of all subcontinua of X. S. López introduced the concepts of pseudo-linearity and pseudo-circularity in order to characterize continua having a positive Whitney level that is an arc or a ...
José Gerardo Ahuatzi-Reyes   +2 more
doaj   +1 more source

More on T-closed sets

open access: yesApplied General Topology
We consider properties of the diagonal of a continuum that are used later in the paper. We continue the study of T-closed subsets of a continuum X. We prove that for a continuum X, the statements: ΔX  is a nonblock subcontinuum of X2, ΔX is a shore ...
Javier Camargo, Sergio Macías
doaj   +1 more source

Fans whose hyperspace of subcontinua are cones

open access: yes, 2002
It is proved that if F is a fan, then the hyperspace of subcontinua of F is homeomorphic to a cone over a continuum if and only if F is homeomorphic to a cone over a compact metric ...
Macías, Sergio, Nadler, Sam B.
core   +1 more source

Concerning the cone = hyperspace property

open access: yes, 1981
An example of a one-dimensional, nonchainable, noncircle-like continuum is constructed and shown to have the cone = hyperspace property. In addition, it is proved that a sufficient condition for a continuum X to have the cone = hyperspace property is ...
Marsh, Dorothy Sherling
core  

HYPERSPACE SUSPENSION AND THE FIXED POINT PROPERTY

open access: yes, 2010
We present some results and examples concerning the fixed point property for hyperspace ...
FLORENCIO CORONA–VÁZQUEZ , RAÚL ESCOBEDO
core  

On Bairness of the Wijsman Hyperspace [PDF]

open access: yes, 2007
Baireness of the Wijsman hyperspace topology is characterized for a metrizable base space with a countable-in-itself p-base; further, a separable 1st category metric spaceis constructed with a Baire Wijsman ...
Zsilinszky, Laszlo   +1 more
core  

Hyperspace Retractions for Curves

open access: yes, 1997
We study retractions from the hyperspace of all nonempty closed subsets of a given continuum onto the continuum (which is naturally embedded in the hyperspace).
Omiljanowski, Krzysztof   +2 more
core  

On (Strong) a-Favorability of the Wijsman Hyperspace [PDF]

open access: yes, 2010
The Banach–Mazur game as well as the strong Choquet game are investigated on theWijsman hyperspace from the nonempty player’s (i.e. a’s) perspective.
Zsilinszky, Laszlo   +1 more
core  

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