Results 31 to 40 of about 707 (188)

Multivalued function spaces and Atsuji spaces

open access: yesApplied General Topology, 2003
In this paper we present two themes. The first one describes a transparent treatment of some of the recent results in graph topologies on multi-valued functions.
Som Naimpally
doaj   +1 more source

On the Loop Homology of a Certain Complex of RNA Structures

open access: yesMathematics, 2021
In this paper, we establish a topological framework of τ-structures to quantify the evolutionary transitions between two RNA sequence–structure pairs. τ-structures developed here consist of a pair of RNA secondary structures together with a non-crossing ...
Thomas J. X. Li, Christian M. Reidys
doaj   +1 more source

Vietoris hyperspaces of scattered Priestley spaces

open access: yes, 2021
We study Vietoris hyperspaces of closed and closed final sets of Priestley spaces. We are particularly interested in Skula topologies. A topological space is \emph{Skula} if its topology is generated by differences of open sets of another topology.
Banakh, T., Bonnet, R., Kubiś, W.
core   +1 more source

The hyperspaces Cn(X) for finite ray-graphs

open access: yesApplied General Topology, 2013
In this paper we consider the hyperspace Cn(X) of non-empty and closed subsets of a base space X with up to n connected components. The class of base spaces we consider we call finite ray-graphs, and are a noncompact variation on finite graphs.
Norah Esty
doaj   +1 more source

Homotopical decompositions of simplicial and Vietoris Rips complexes

open access: yes, 2021
Motivated by applications in Topological Data Analysis, we consider decompositionsof a simplicial complex induced by a cover of its vertices. We study how the homotopytype of such decompositions approximates the homotopy of the simplicial complexitself ...
Tombari, Francesca   +3 more
core   +1 more source

Topologies on Superspaces of TVS-Cone Metric Spaces

open access: yesThe Scientific World Journal, 2014
This paper investigates superspaces 𝒫0(X) and 𝒦0(X) of a tvs-cone metric space (X,d), where 𝒫0(X) and 𝒦0(X) are the space consisting of nonempty subsets of X and the space consisting of nonempty compact subsets of X, respectively.
Xun Ge, Shou Lin
doaj   +1 more source

Persistent homology in graph power filtrations [PDF]

open access: yesRoyal Society Open Science, 2016
The persistence of homological features in simplicial complex representations of big datasets in Rn resulting from Vietoris–Rips or Čech filtrations is commonly used to probe the topological structure of such datasets.
Allen D. Parks, David J. Marchette
doaj   +1 more source

Method for persistent topological features extraction of schizophrenia patients’ electroencephalography signal based on persistent homology

open access: yesFrontiers in Computational Neuroscience, 2022
With the development of network science and graph theory, brain network research has unique advantages in explaining those mental diseases, the neural mechanism of which is unclear.
Guangxing Guo   +13 more
doaj   +1 more source

Cellular-compact and cellular-Lindelöf on hyperspaces

open access: yesResearches in Mathematics
The generalized metric properties on hyperspaces with the Pixley-Roy topology and the Vietoris topology have been studied by many authors. They considered several generalized metric properties and studied the relation between a space $X$ satisfying such ...
L.Q. Tuyen, O.V. Tuyen, N.X. Truc
doaj   +1 more source

Lower-Vietoris-type topologies on hyperspaces

open access: yesTopology and its Applications, 2017
14 ...
openaire   +2 more sources

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