Results 11 to 20 of about 11,369 (179)
Countable dense homogeneous filters and the Menger covering property [PDF]
Fundamenta Mathematicae, 2014 In this note we present a ZFC construction of a non-meager filter which fails to be countable dense homogeneous. This answers a question of Hern ndez-Guti rrez and Hru k. The method of the proof also allows us to obtain a metrizable Baire topological group which is strongly locally homogeneous but not countable dense homogeneous.
Repovs, Dusan +2 more
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Projective versions of the properties in the Scheepers Diagram [PDF]
, 2020 Let $\mathcal{P}$ be a topological property. A.V. Arhangel'skii calls $X$ projectively $\mathcal{P}$ if every second countable continuous image of $X$ is $\mathcal{P}$. Lj.D.R.
Osipov, Alexander V.
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Economic vs. juristic thinking in Carl Menger’s principles of economics [PDF]
Ekonomski Anali, 2005 Austrian Economic School is increasingly being treated as one of the most significant and ever more influential bodies of ideas affecting the contemporary economic science.
Jandl Gerhard
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Fractal and Fractional, 2022 Carbon nanotubes (CNTs) are considered among the ideal modifiers for cement-based materials. This is because CNTs can be used as a microfiber to compensate for the insufficient toughness of the cement matrix.
Jinjun Guo +3 more
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No-splitting property and boundaries of random groups [PDF]
, 2009 We prove that random groups in the Gromov density model, at any density, satisfy property (FA), i.e. they do not act non-trivially on trees. This implies that their Gromov boundaries, defined at density less than 1/2, are Menger curves.Comment: 20 ...
A. Żuk +13 more
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About uniformly Menger spaces [PDF]
Mathematica MoravicaPrecompact type properties - precompactness (=totally precompactness), s-precompactness, pre-Lindelöfness, (=ℵ0-boundedness), t -boundedness - belong to the basic important invariants studied in the uniform topology.
Kanetov Bekbolot +2 more
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Selective covering properties of product spaces [PDF]
, 2013 We study the preservation of selective covering properties, including classic ones introduced by Menger, Hurewicz, Rothberger, Gerlits and Nagy, and others, under products with some major families of concentrated sets of reals.
Miller, Arnold W. +2 more
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When is a space Menger at infinity?
Applied General Topology, 2015 We try to characterize those Tychonoff spaces X such that $\beta X\setminus X$ has the Menger property.
Leandro Fiorini Aurichi, Angelo Bella
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A Diagonalization Property between Hurewicz and Menger [PDF]
Real Analysis Exchange, 2002 Regular ...
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Materials & Design, 2020 We constructed a three-dimensional fractal acoustic metamaterial using the combination of zigzag channels and Menger fractal structures that had high structural symmetry and could extend into 3D space easily. Reflection and transmission coefficients were
Yu Liu +7 more
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