Results 271 to 280 of about 274,570 (306)

Some Properties of Precovers and Covers

Algebras and Representation Theory, 2009
Let \(\mathcal G\) be a hereditary class of modules. Then \(\mathcal G\)-covers are characterized in terms of injectivity of homomorphisms into \(\mathcal G\)-precovers and of surjectivity of homomorphisms from \(\mathcal G\)-precovers. Also, the author establishes several properties of (pre)covers of (relatively) injective modules and some relations ...
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An Open Cover Specification Property

Journal of Dynamical and Control Systems
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Kumar, Devender, Das, Ruchi
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A covering property in principal bundles

2018
Summary: Let \(p:X\to B\) be a locally trivial principal \(G\)-bundle and \(\widetilde{p}:\widetilde{X}\to B\) be a locally trivial principal \(\widetilde{G}\)-bundle. In this paper, by using the structure of principal bundles according to transition functions, we show that \(\widetilde{G}\) is a covering group of \(G\) if and only if \(\widetilde{X}\)
Pakdaman, A., Attary, M.
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Geotechnical Properties of Cover Beds

2013
Abstract The occurrence and spatial distribution of cover beds are decisive for modern hillslope morphodynamics. This aspect is strongly associated with the geotechnical properties of cover beds and especially with their anisotropy. The impact of periglacial cover beds on mass movements, in particular landslides in subdued mountains, will be ...
B. Damm, B. Terhorst, F. Ottner
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Frankl’s Conjecture and the Dual Covering Property

Graphs and Combinatorics, 2009
Frankl's conjecture states that for any union-closed family of subsets \(F\) of a finite set \(X\) with at least two members there exists an element \(x\) of \(X\) such that at least half of the members of \(F\) contain \(x\). B. Poonen reformulated this for lattices as follows: Let \(L\) be a finite lattice with at least two elements.
R. S. Shewale, Vinayak Joshi, Vilas S. Kharat   +2 more
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Finite coverability property

Algebra universalis, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Botur, Michal, Broušek, Martin
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Definition of Covering and Properties of Covering Materials

2002
There are many kinds of covering materials and techniques available and used in practical agriculture. It is rather difficult to distinguish one technique from the other in some cases because the principle involved is the same. The following terms are used for these systems: mulchings, row covers (tunnels), floating mulches (floating row cover), rain ...
Tadashi Takakura, Wei Fang
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Evolution of Physicochemical Properties of Tundish Covering Flux in Continuous Casting Process

Minerals, Metals and Materials Series, 2022
Mujun Long, Dengfu Chen, Huamei Duan
exaly  

Convex Bodies with a Covering Property†

Journal of the London Mathematical Society, 1968
Bambah, R. P., Woods, A. C.
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Weak Peripheral Covering Properties Imply Covering Properties

Journal of the London Mathematical Society, 1969
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