Results 71 to 80 of about 76,584 (187)
Pairwise incident planes and hyperkaehler four-folds
, 2012 We address the following question: what are the cardinalities of maximal finite families of pairwise incident planes in a complex projective space? One proves easily that the span of the planes has dimension 5 or 6. Up to projectivities there is one such
O'Grady, Kieran G.
core
The small condition for modules with Noetherian dimension [PDF]
Journal of Mahani Mathematical ResearchA module $M$ with Noetherian dimension is said to satisfy the small condition, if for any small submodule $S$ of $M$ the Noetherian dimension of $S$ is strictly less than the Noetherian dimension of $M$. For an Artinian module $M$, this is equivalent to
Nasrin Shirali +2 more
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Quasicrystals: atomic coverings and windows are dual projects [PDF]
Journal of Physics A: Mathematical and General, 1999 In the window approach to quasicrystals, the atomic position space E_parallel is embedded into a space E^n = E_parallel + E_perp. Windows are attached to points of a lattice Lambda \in E^n. For standard 5fold and icosahedral tiling models, the windows are perpendicular projections of dual Voronoi and Delone cells from Lambda. Their cuts by the position
openaire +2 more sources
On the geometry of the Coble-Dolgachev sextic
Le Matematiche, 2003 In this paper, we study the intersection of the Coble-Dolgachev sextic with special projective spaces. Let us recall that the Coble-Dolgachev sextic C_6 is the branch divisor of a double cover map.
Nguyen Quang Minh, Slawomir Rams
doaj
Biogeocenosis development during initial revegetation of a coal combustion ash dump
BIO Web of Conferences, 2018 The initial stage of biogeocenoses development on the coal ash dump produced by the thermal power staton in Novosibirsk (55.000, 83.068), Russia, were studied after 9 years of spontaneous revegetation.
Sheremet Natalia +4 more
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Mumford coverings of the projective line
Archiv der Mathematik, 2003 In a famous paper of 1987 [in: Number theory, Semin. New York 1984/85, Lect. Notes Math. 1240, 165--195 (1987; Zbl 0627.12015)], \textit{D. Harbater} proved that any finite group \(G\) can be realized as the Galois group of a finite normal covering of the projective line over a given complete non-Archimedean field \(K\).
Put, Marius van der, Voskuil, Harm H.
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Grass cover and meadow forage reservein the Cervus elaphus L. breeding
Наукові праці Лісівничої академії наук України, 2019 Species composition, projective cover, frequency of occurrence, abundance and grass reserve on the out of agricultural use lands in conditions of the Western Polissia of Ukraine are characterized.
Vasyl Mazepa +2 more
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Projective structures inducing covering maps
Duke Mathematical Journal, 1995 The author considers parametrization of the projective structures on a compact Riemann surface \(S\) of genus \(\geq 2\). The pullback of a projective structure on \(S\) determines a projective structure on the universal covering space \(\widetilde U\) of \(S\), and the analytic continuation of the projective coordinate charts defines a local ...
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Ecological-geomorphologic profile of Lesnye Koshki island in the delta of the Northern Dvina river
RUDN Journal of Ecology and Life Safety, 2011 The analysis of ecological-floristic and some of the geomorphological features of islands in delta of the Northern Dvina river is executed. The influence of a microrelief of the island on the projective cover degree of dominant species is established.
T А Parinovа, E N Nakvasina
doaj
CURRENT STATE OF SOIL AND VEGETATION COVER OF THE ESTUARY OF THE NORTHERN PART OF THE BARABA LOWLAND
Мелиорация и гидротехникаPurpose: to study the current state of the soil and vegetation cover of the lands irrigated by the reclamation system “Estuary Irrigation, Pushchikha tract” as a means of agricultural production. Materials and methods. The object of study is located in
Darya A. Filimonova +3 more
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