Results 81 to 90 of about 290 (118)

Isogeny character and uniform bound for homotheties

, 2008
L'objet de cette thèse est l'obtention de résultats uniformes sur l'image des représentations galoisiennes associées aux points de torsion des courbes elliptiques possédant une isogénie de degré premier. Le cadre se compose d'un corps de nombres K différent de Q et galoisien sur Q, d'une courbe elliptique E définie sur K et d'un nombre premier p ; on ...
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Homotheties of cylindrically symmetric static spacetimes [PDF]

, 1999
Sharif, M, Ziad, M, Qadir, A
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The Return of Homothety in den Mathematical Contests

, 2008
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On functional classes invariant relative to homotheties

Lecture Notes in Mathematics, 1992
Yu. G. Reshetnyak
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On minkowski planes with transitive groups of homotheties

Abhandlungen Aus Dem Mathematischen Seminar Der Universitat Hamburg, 1994
In analogy with the well-known Lenz-Barlotti classification of projective planes, there are the Hering classification of Möbius planes [\textit{C. Hering}, Math. Z. 87, 252-262 (1965; Zbl 0126.166)], the Kleinewillinghofer classification of Laguerre planes [\textit{R. Kleinewillinghofer}, Arch. Math.
Klein, M., Kroll, H.-J.
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Covering convex solids by greater homotheties

Mathematical Notes, 1972
Let K be a convex solid of Euclidean space En, with bd K and int K being its boundary and interior. The paper solves the problem of the possibility of covering K by sets homothetic to int K, with the ratio of the homotheties being greater than unity and the centers being in En/int K, while, should such a covering exist, an estimate is provided of the ...
P S Soltan
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Motions and homotheties in Finsler spaces and their generalizations

Journal of Soviet Mathematics, 1986
Translation from Itogi Nauki Tekh., Ser. Probl. Geom. 16, 81-126 (Russian) (1984; Zbl 0576.53021).
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Classification of Minkowski planes by transitive groups of homotheties

Journal of Geometry, 1992
In 1989, the author with H.-J. Kroll published a classification of Minkowski planes based on the notions ``\(G\)-translations'' and ``\(q\)- translations''. In the present paper the author improves upon the classification by looking at transitive groups of homotheties. These results complete the classification by \textit{M.
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Locally conformally Berwald manifolds and compact quotients of reducible manifolds by homotheties

Annales De L'Institut Fourier, 2017
We study locally conformally Berwald metrics on closed manifolds which are not globally conformally Berwald. We prove that the characterization of such metrics is equivalent to characterizing incomplete, simply-connected, Riemannian manifolds with ...
Vladimir S. Matveev, Yury Nikolayevsky
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Topological Homotheties on Compact Metrizable Spaces

Canadian Journal of Mathematics, 1968
Notation and definitions.Definition 1. Let (X, ρ) be a metric space and ϕ: X → X a continuous self-mapping of X. We shall call ϕ and α-contraction on (X, ρ) if and only if α ϵ [0,1) and . We shall call ϕ an α-homothety on (X, ρ) if and only if α > 0 and .
Ludvik Janos
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