Results 91 to 100 of about 707 (188)

Mayer vietoris sequence for persistent homology

open access: yes, 2018
Persistent homology is an algebraic method for understanding topological features of discrete objects or data (finite set of points with metric defined on it).
YAĞMUR YILMAZ
core  

Cohomology for Operator Algebras: The Mayer–Vietoris Sequence

open access: yes, 1997
For an inclusion B⊆A of operator algebras we introduce the B-nil cohomology groupsHn(A∣B), which can be easier to compute than the standard cohomology groupsHn(A).
Smith, Roger R.   +2 more
core   +1 more source

Singular Vietoris-Begle theorems for relations

open access: yes, 1984
The Vietoris-Begle theorem with singularities, for three spaces X X , Y Y , T T , is extended to the case that a closed relation replaces a continuous map and more generally to set valued maps.
D. G. Bourgin, Robert M. Nehs
core   +1 more source

Convex power domain and vietoris space

open access: yes, 2004
In this paper, the maximal point spaces (MP-space in short) of convex power domains are investigated. Some characterizations of the maximal points of convex power domains are obtained.
Liang, Jihua, Kou, Hui
core   +1 more source

Atom probe informed persistent homology analysis of precipitation topology and hardening

open access: yesMaterials & Design
Precipitation hardening (PH) in metals arises from the evolution of precipitate structures, where connectivity and spatial organisation critically influence mechanical performance.
Siying Zhu, Tao Zhou
doaj   +1 more source

Classification of Topological Contacts Between Phases in 3D Multiphase Systems by Betti Number Dynamics

open access: yesMathematics
A methodological approach to the quantitative description of the spatial relations between phases in multicomponent systems is developed, based on the comparison of Betti numbers of united phases.
Andrey O. Kalashnikov   +1 more
doaj   +1 more source

Topology and domain theory

open access: yes, 2002
We show that a measurement µ on a continuous dcpo D extends to a measurementμ on the convex powerdomain CD iff it is a Lebesgue measurement. In particular, ker µ must be metrizable in its relative Scott topology.
Keye Martin
core  

A topology generated by selections

open access: yes, 2005
Every selection f:F2(X)→X for the family F2(X) of at most two-point subsets of a set X naturally defines an order-like relation ⪯f on X by letting x⪯fy if and only if f({x,y})=x. In particular, it also defines a natural interval-like topology on X.
Nogura, Tsugunori, Gutev, Valentin
core   +1 more source

Topological Study of β-Sparsified d-Uniform Hypergraph-Based Simplicial Complexes

open access: yesMathematics
Persistent Homology (PH) is a method of Topological Data Analysis that characterizes the topological structure of a space. Unfortunately, the computation of PH for high-dimensional and big data is not possible due to the exponential growth of the ...
Rohit P. Singh   +3 more
doaj   +1 more source

The Vietoris hyperspace structure for approach spaces

open access: yes, 2013
: We show that there exists a natural approach version of the topological Vietoris hyperspace construction [16], [17] which has several advantages over the topological version.
Wuyts, P., Lowen, Robert
core  

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