Results 61 to 70 of about 3,108 (166)

On collineation groups of translation planes of order q4

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1986
Let P be an affine translation plane of order q4 admitting a nonsolvable group G in its translation complement. If G fixes more than q+1 slopes, the structure of G is determined.
V. Jha, N. L. Johnson
doaj   +1 more source

Matrix spread sets of p-primitive semifield planes

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1997
In this article we present the matrix spread sets of the p-primitive planes of order p4 where p=3,5,7,11.
M. Cordero
doaj   +1 more source

Behavior of Time-varying Constants in Relativity

open access: yes, 2009
In this paper, we consider Bianchi type III and Kantowski-Sachs spacetimes and discuss the behavior of time-varying constants $G$ and $\Lambda$ by using two symmetric techniques, namely, kinematic self-similarity and matter collineation. In the kinematic
Kausar, H. Rizwana, Sharif, M.
core   +1 more source

Figure and affect in Collins [PDF]

open access: yesTextual Practice, 2010
On the eventness of sensation ...
openaire   +2 more sources

Matter and Ricci Collineations [PDF]

open access: yes, 2013
The infinitesimal transformations that leave invariant a two-covariant symmetric tensor are studied. The interest of these symmetry transformations lays in the fact that this class of tensors includes the energy-momentum and Ricci tensors. We find that in most cases the class of infinitesimal generators of these transformations is a finite dimensional ...
openaire   +3 more sources

(a) Les collines

open access: yesComité de Conservation des Monuments de l'Art Arabe, 1961
Greg Robert Hyde. (a) Les collines. In: Comité de Conservation des Monuments de l'Art Arabe. Fascicule 40, exercice 1946-1953, 1961. p. 31.
openaire   +2 more sources

Treacher collins syndrome

open access: yesBritish Journal of Plastic Surgery, 1950
Summary Two cases of Treacher Collins syndrome are reported. The family history is shown to be variable, but there appears to be a distinct familial incidence. A comparison has been drawn between the Treacher Collins syndrome and unilateral facial agenesis. The embryology is discussed, and it has been suggested that the causative factor may influence
openaire   +4 more sources

Group-labeled light dual multinets in the projective plane (with Appendix)

open access: yes, 2017
In this paper we investigate light dual multinets labeled by a finite group in the projective plane $PG(2,\mathbb{K})$ defined over a field $\mathbb{K}$. We present two classes of new examples.
Korchmáros, Gábor, Nagy, Gábor P.
core   +1 more source

Lie and Noether symmetries of geodesic equations and collineations

open access: yes, 2011
The Lie symmetries of the geodesic equations in a Riemannian space are computed in terms of the special projective group and its degenerates (affine vectors, homothetic vector and Killing vectors) of the metric.
A. Barnes   +20 more
core   +1 more source

The Collins: W. Collin, Court Bookbinders & Ernst Collin, the Author of the Pressbengel

open access: yes, 2016
The Berlin-based firm of W. Collin led by Wilhelm and Georg Collin and the antiquarian, author, and editor Ernst Collin were among the leaders in German bookbinding trade and writings about the trade from the mid-1800's into the mid-1930's. During that same time, bookbinding experienced many transformations, as well, moving from a trade practiced in ...
openaire   +2 more sources

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