Results 51 to 60 of about 352,472 (292)

The deficiency of being a congruence group for Veech groups of origamis

, 2012
We study "how far away" a finite index subgroup G of SL(2,Z) is from being a congruence group. For this we define its deficiency of being a congruence group. We show that the index of the image of G in SL(2,Z/nZ) is biggest, if n is the general Wohlfahrt
Weitze-Schmithuesen, Gabriela
core   +1 more source

Focusing of geodesic congruences in an accelerated expanding Universe [PDF]

, 2012
We study the accelerated expansion of the Universe through its consequences on a congruence of geodesics. We make use of the Raychaudhuri equation which describes the evolution of the expansion rate for a congruence of timelike or null geodesics.
, A. Abebe, A. de la Cruz-Dombriz, A. de la Cruz-Dombriz, B. Carter, F.D Albareti, G. Lemaître, G. Lemaître, G.F. Ellis, H.P. Robertson, J. Beltrán Jimenez, J. Cembranos, J. Cembranos, J. Cembranos, J. Cembranos, J. Cembranos, J. Ehlers, J.A. Cembranos, J.A.R Cembranos, L.P. Eisenhart, N. Dadhich, N. Dadhich, N. Jarosik ., R.M. Wald, S. Carloni, S. Nojiri, Supernova Cosmology Project collaboration, Supernova Search Team collaboration, Supernova Search Team collaboration, WMAP collaboration   +29 more
core   +3 more sources

Cubic congruences.

Michigan Mathematical Journal, 1957
Es wird bewiesen, daß jede Kongruenz \(\sum_{i=1}^n \alpha_ix_i^3\equiv 0 \pmod {\mathfrak m}\), wobei die \(\alpha_i\) ganze Zahlen eines Ringes algebraischer Zahlen sind und \(\mathfrak m\) ein Ideal dieses Ringes ist, für \(n\geq 7\) eine nichttriviale Lösung in ganzen Zahlen dieses Ringes besitzt; ferner, daß dies für ...
openaire   +2 more sources

Discordance between systemic lupus erythematosus disease activity index domain weights and their association with organ damage accrual

Arthritis Care &Research, Accepted Article.
Objective Studies of damage accrual in patients with systemic lupus erythematosus (SLE) show associations with disease activity measured by the SLE Disease Activity Index 2000 (SLEDAI‐2K), but these associations are imperfect. SLEDAI scores are powerfully influenced by weightings (1‐8) assigned to each domain.
Kevin Zhang, Eric F. Morand, Sarah E. Boyd, François Petitjean, Alberta Hoi, Rachel Koelmeyer, Iolanda Miceli, Julie A. Monk, Hieu T. Nim   +8 more
wiley   +1 more source

Congruences for L-functions of additive exponential sums [PDF]

, 2012
We give a congruence for L-functions coming from affine additive exponential sums over a finite field. Precisely, we give a congruence for certain operators coming from Dwork's theory.
Blache, Régis
core  

Enhancing Optoelectronic Properties in Phthalocyanine‐Based SURMOFs: Synthesis of ABAB Linkers by Avoiding Statistical Condensation with Tailored Building Blocks

Advanced Functional Materials, EarlyView.
A novel phthalocyanine (PC)‐based metal–organic framework (MOFs) is synthesized using ditopic PC linkers obtained through regioselective statistical condensation. The resulting MOF exhibits significant improvements in electronic absorption, thereby enhancing the material's performance in light harvesting and energy conversion.
Lukas S. Langer, Mareen Stahlberger, Xiaojing Liu, Yi Luo, Niklas E. Häußermann, Puja Singhvi, Yidong Liu, Olaf Fuhr, Martin Nieger, Lars Heinke, Thomas Heine, Christof Wöll, Stefan Bräse   +12 more
wiley   +1 more source

Figure and its influence on problem solving strategies for a flat Geometry problem

Educação Matemática Debate, 2018
In this paper we aim to analyze how a figure proposed as part of the statement of a problem situation about flat Geometry can influence the resolution procedures presented by students entering a Mathematics degree course.
Cleusiane Vieira Silva, Weslley Igor da Cruz dos Santos   +1 more
doaj   +1 more source

Consensus genetic structuring and typological value of markers using multiple co-inertia analysis

Genetics Selection Evolution, 2007
Working with weakly congruent markers means that consensus genetic structuring of populations requires methods explicitly devoted to this purpose. The method, which is presented here, belongs to the multivariate analyses.
Moazami-Goudarzi Katayoun, Dufour Anne-Béatrice, Jombart Thibaut, Laloë Denis   +3 more
doaj   +1 more source

Should Advertisers Avoid Controversial TV Content? Female Viewer Loyalty and Purchase Intent in the Context of Targeted Sponsorship Vignettes

Central European Management Journal, 2021
Purpose: This study aims to investigate whether controversial TV content impacts the effects of non – standard advertising such as sponsorship vignette among female viewers.
Banerski Grzegorz, Biele Cezary, Awdziej Marcin, Kaczyński Adam, Molenda Sylwester   +4 more
doaj   +1 more source

Varieties whose tolerances are homomorphic images of their congruences [PDF]

, 2012
The homomorphic image of a congruence is always a tolerance (relation) but, within a given variety, a tolerance is not necessarily obtained this way. By a Maltsev-like condition, we characterize varieties whose tolerances are homomorphic images of their ...
Czedli, Gabor, Kiss, Emil W.
core   +3 more sources