Results 71 to 80 of about 6,504,546 (373)
Wasit Journal for Pure SciencesThe object of this work to introduce a new form of fuzzy compact space in a fuzzy topological space, named by fuzzy feebly compact space. It is stronger than a fuzzy compact space.
Saad Mahdi Jaber
doaj +1 more source
$G_\delta$-topology and compact cardinals
, 2018 For a topological space $X$, let $X_\delta$ be the space $X$ with $G_\delta$-topology of $X$. For an uncountable cardinal $\kappa$, we prove that the following are equivalent: (1) $\kappa$ is $\omega_1$-strongly compact.
Usuba, Toshimichi
core +1 more source
Products of straight spaces with compact spaces
Applied General Topology, 2007 [EN] A metric space X is called straight if any continuous real-valued function which is uniformly continuous on each set of a finite cover of X by closed sets, is itself uniformly continuous. Let C be the convergent sequence {1/n : n ϵ N} with its limit 0 in the real line with the usual metric. In this paper, we show that for a straight space X, X × C
Nishijima, Kusuo, Yamada, Kohzo
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On mappings of compact spaces into Cartesian spaces
Topology and its Applications, 2000 AbstractEilenberg proved that if a compact space X admits a zero-dimensional map f:X→Y, where Y is m-dimensional, then there exists a map h:X→Im+1 such that f×h:X→Y×Im+1 is an embedding. In this paper we prove generalizations of this result for σ-compact subsets of arbitrary spaces.
Vitaly V. Fedorchuk +2 more
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Weak compactness and Orlicz spaces [PDF]
Colloquium Mathematicum, 2008 We give new proofs that some Banach spaces have Pe czy ski's property $(V)$.
Lefèvre, Pascal +3 more
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Compact folded metasurface spectrometer [PDF]
Nature Communications, 2018 An optical design space that can highly benefit from the recent developments in metasurfaces is the folded optics architecture where light is confined between reflective surfaces, and the wavefront is controlled at the reflective interfaces.
Mohammadsadegh Faraji-Dana +5 more
semanticscholar +1 more source
International Journal of Adaptive Control and Signal Processing, EarlyView.Summary Data‐driven forecasting of ship motions in waves is investigated through feedforward and recurrent neural networks as well as dynamic mode decomposition. The goal is to predict future ship motion variables based on past data collected on the field, using equation‐free approaches.
Matteo Diez +2 more
wiley +1 more source
Perfect maps in compact (countably compact) spaces
International Journal of Mathematics and Mathematical Sciences, 1995 In this paper, among other results, characterizations of perfect maps in compact Hausdorff(Fréchet, countably compact, Hausdorff) spaces are obtained.
G. L. Garg, Asha Goel
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The Entropy of Co-Compact Open Covers
Entropy, 2013 Co-compact entropy is introduced as an invariant of topological conjugation for perfect mappings defined on any Hausdorff space (compactness and metrizability are not necessarily required).
Steven Bourquin +4 more
doaj +1 more source
A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems
International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam +2 more
wiley +1 more source