Results 21 to 30 of about 416 (159)

Topologies on Superspaces of TVS-Cone Metric Spaces

open access: yesThe Scientific World Journal, 2014
This paper investigates superspaces š’«0(X) and š’¦0(X) of a tvs-cone metric space (X,d), where š’«0(X) and š’¦0(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.Ā Parks, David J.Ā 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-Lindelƶf 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

Entanglement, space-time and the Mayer-Vietoris theorem

open access: yesJournal of High Energy Physics, 2017
Entanglement appears to be a fundamental building block of quantum gravity leading to new principles underlying the nature of quantum space-time. One such principle is the ER-EPR duality.
Andrei T. Patrascu
doaj   +1 more source

Lower-Vietoris-type topologies on hyperspaces

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

Selections and order-like relations

open access: yesApplied General Topology, 2001
Every selection f for the family F2(X) of at most two-point subsets of a set X naturally defines an order-like relation on X by Ā if and only . In the present paper we study the relationship between and the possible topologies T on X which realize the ...
Valentin Gutev, Tsugunori Nogura
doaj   +1 more source

Orderability and continuous selections for Wijsman and Vietoris hyperspaces

open access: yesApplied General Topology, 2003
Bertacchi and Costantini obtained some conditions equivalent to the existence of continuous selections for the Wijsman hyperspace of ultrametric Polish spaces. We introduce a new class of hypertopologies, the macro-topologies.
Debora Di Caprio, Stephen Watson
doaj   +1 more source

Selection principles in hyperspaces with generalized Vietoris topologies

open access: yesTopology and its Applications, 2008
In [J. Korean Math. Soc. 43, No.~5, 1099--1114 (2006; Zbl 1113.54006)] and [Topology Appl. 155, No.~17--18, 1947--1958 (2008; Zbl 1221.54004)], the authors investigated hyperspaces on a Čech closure space, in particular the question of what topologies could be considered as well as what results were still valid in this setting.
MrÅ”ević, Mila, Jelić, Milena
openaire   +1 more source

All hypertopologies are hit-and-miss

open access: yesApplied General Topology, 2002
We solve a long standing problem by showing that all known hypertopologies are hit-and-miss. Our solution is not merely of theoretical importance.
Somshekhar Naimpally
doaj   +1 more source

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