Results 11 to 20 of about 201,202 (191)
Scalar Field Evolution at Background and Perturbation Levels for a Broad Class of Potentials
Fortschritte der Physik, Volume 71, Issue 10-11, November 2023., 2023 Abstract In this paper, a non‐interacting scalar field cosmology with an arbitrary potential using the f‐deviser method that relies on the differentiability properties of the potential is investigated. Using this alternative mathematical approach, a unified dynamical system analysis at a scalar field's background and perturbation levels with arbitrary ...
Genly Leon +5 more
wiley +1 more source
A footnote to a theorem of Kawamata
Mathematische Nachrichten, Volume 296, Issue 10, Page 4739-4744, October 2023., 2023 Abstract Kawamata has shown that the quasi‐Albanese map of a quasi‐projective variety with log‐irregularity equal to the dimension and log‐Kodaira dimension 0 is birational. In this note, we show that under these hypotheses the quasi‐Albanese map is proper in codimension 1 as conjectured by Iitaka.
Margarida Mendes Lopes +2 more
wiley +1 more source
Morse–Radó theory for minimal surfaces
Journal of the London Mathematical Society, Volume 108, Issue 4, Page 1669-1700, October 2023., 2023 Abstract For a class of functions (called minimal Radó functions) that arise naturally in minimal surface theory, we bound the number of interior critical points (counting multiplicity) in terms of the boundary data and the Euler characteristic of the domain of the function.
David Hoffman +2 more
wiley +1 more source
Applications in Plant Sciences, Volume 11, Issue 5, September-October 2023., 2023 Abstract Premise We recognized the need for a customized imaging protocol for plant specimens at the time of collection for the purpose of three‐dimensional (3D) modeling, as well as the lack of a broadly applicable photogrammetry protocol that encompasses the heterogeneity of plant specimen geometries and the challenges introduced by processes such as
Nicole James, Alex Adkinson, Austin Mast
wiley +1 more source
Dynamical Analysis in Chameleon Dark Energy
Fortschritte der Physik, Volume 71, Issue 8-9, September 2023., 2023 Abstract A detailed analysis of the phase‐space for the field equations in scalar field cosmology with a chameleon cosmology in a spatially flat Friedmann–Lemaître–Robertson–Walker spacetime is presented. For the matter source it is assumed that it is an ideal gas with a constant equation of state parameter, while for the scalar field potential and the
Andronikos Paliathanasis
wiley +1 more source
The influence of equine hoof conformation on the initiation and progression of laminitis
Equine Veterinary Journal, Volume 55, Issue 5, Page 862-871, September 2023., 2023 Abstract Background The health and performance of horses are significantly affected by diseases associated with the hoof. Laminitis is a critical hoof disease that causes pain and, potentially, severe hoof and bone pathology. Objective To generate an equine hoof finite element (FE) model to investigate the impact of normal and toe‐in hoof conformations
Naeim Akbari Shahkhosravi +3 more
wiley +1 more source
CURVATURE APPROXIMATION FROM PARABOLIC SECTORS
Image Analysis and Stereology, 2017 We propose an invariant three-point curvature approximation for plane curves based on the arc of a parabolic sector, and we analyze how closely this approximation is to the true curvature of the curve.
Ximo Gual-Arnau +2 more
doaj +1 more source
Revista de Ensino de Ciências e Matemática, 2018 Esta pesquisa de doutorado tomada como instrumento de construção do conhecimento e de ação reflexiva desenvolveu-se no Grupo de Estudo e Pesquisa em Didática e Metodologia em Educação Matemática do Programa de Pós-Graduação em Ensino de Ciências e ...
Gladiston dos Anjos Almeida +1 more
doaj +1 more source
Multiple quantum products in toric varieties
International Journal of Mathematics and Mathematical Sciences, 2002 We generalize the author's formula for Gromov-Witten invariants of symplectic toric manifolds (1999) to those needed to compute the quantum product of more than two classes directly, that is, involving the pullback of the Poincaré dual of the point class
Holger Spielberg
doaj +1 more source
Geometría Descriptiva. Geometría Constructiva
Revista de Expresión Gráfica en la Edificación, 1999 La Geometría Descriptiva es esencialmente una asignatura de primer curso, es decir, una asignatura de base, formativa, pero no específicamente tecnológica.
Luis Sánchez-Cuenca
doaj +1 more source