Results 41 to 50 of about 239 (123)
, 1976 This paper is an exposition of the theory of the hyperspaces 2^X and C(X) of a topological space X. These spaces are obtained from X by collecting the nonempty closed and nonempty closed connected subsets respectively, and are topologized by the Vietoris
Voas, Charles H.
core
Cu‐Catalyzed Tetrafluoroethylation of Aryl Iodides Using “Safe Supply” Tetrafluoroethylene
ChemCatChem, Volume 18, Issue 6, 27 March 2026.Reaction of [CuH(PPh3)]6 with PMePh2 and readily obtained 1:1 CO2: tetrafluoroethylene affords Cu complex 1 that ffects the CuCl(NHC)‐catalysed tetrafluoroethylation of aryl iodides. ABSTRACT The success of Cu‐mediated, late‐stage fluoroalkylation, originally developed for CF3 transfer, has expanded to additional RF groups including C2F5, CF2H, OCF3 ...
Nicholas O. Andrella +4 more
wiley +1 more source
Continua with almost unique hyperspace
Topology and its Applications, 2002 Given a continuum \(X\), consider a class \({\mathcal F}_{X}\) of continua \(Y\) such that: (i) no member of \({\mathcal F}_{X}\) is homeomorphic to \(X\), (ii) no two distinct members of \({\mathcal F}_{X}\) are homeomorphic, (iii) \(C(X) \approx C(Y)\) for each \(Y \in {\mathcal F}_{X}\) (the symbol \(C(X)\) denotes the hyperspace of all subcontinua ...
openaire +2 more sources
, 1979 In this paper we investigate the structure of the hyperspaces of subcontinua of some nonlocally connected continua. It is shown that if X is either the cone over any infinite compact metric space or a fan with an infinite number of endpoints, then the ...
Sam B. Nadler, Carl Eberhart
core +1 more source
Real‐Time Detection and Prevention of DoS Attack in Unmanned Marine Vehicles Using Machine Learning
SECURITY AND PRIVACY, Volume 9, Issue 2, March/April 2026.ABSTRACT Unmanned marine vehicles (UMVs) are one of the most crucial components of the underwater communication and surveillance system in the marine and oceanographic environment. This research introduces a novel approach to stabilize the connection in an unstable underwater environment by inheriting features of communication velocities.
Noman Ali +8 more
wiley +1 more source
Revista Integración, 2013 Se dice que una función f : X → Y definida entre espacios topológicos es conexa si la gráfica Γ(f) = {(x, f(x)) : x ∈ X} es conexa. Dado un continuo X, se consideran los hiperespacios: 2 X, la colección de todos los subconjuntos cerrados no vacíos de
Sergio A. Pérez
doaj
Exploring oxide quasicrystals in internal space
Acta Crystallographica Section A, Volume 82, Issue 2, Page 87-95, March 2026.The internal space expansion with variable system size is investigated for three different oxide quasicrystal systems. Patches of 7800, 4800 and 3600 vertices are examined in Ba–Ti–O/Pt(111), Eu–Ti–O/Pd(111) and Sr–Ti–O/Pd(111), respectively. This internal space inspection provides unique structural information for quasicrystalline systems, which goes ...
Sebastian Schenk +3 more
wiley +1 more source
Hyperspaces of hereditarily indecomposable plane continua [PDF]
Proceedings of the American Mathematical Society, 1976 In this note we prove that if X X is a hereditarily indecomposable plane continuum then the hyperspace
openaire +1 more source
, 2012 For a metric continuum X, we consider the hyperspaces C(X) and F2(X) of all subcontinua and of all nonempty subsets of X with at most two points, respectively.
Ordoñez, Norberto +1 more
core +1 more source
Engineering Reports, Volume 8, Issue 1, January 2026.Proposed cyber physical system security framework. ABSTRACT The increasing adoption of cyber‐physical systems (CPS) in Industry 4.0 has heightened vulnerability to cyber threats. This study proposes a machine learning–based intrusion detection framework, DBID‐Net, to effectively identify and prevent attacks in CPS environments. The framework integrates
Anurag Sinha +14 more
wiley +1 more source