Results 1 to 10 of about 4,350 (117)

Surjectivity of the asymptotic Borel map in Carleman ultraholomorphic classes defined by sequences with shifted moments [PDF]

open access: yesJournal of Inequalities and Applications
We prove several improved versions of the Borel-Ritt theorem about the surjectivity of the asymptotic Borel mapping in classes of functions with M-uniform asymptotic expansion on an unbounded sector of the Riemann surface of the logarithm.
Javier Jiménez-Garrido   +3 more
doaj   +2 more sources

How Food Geometry and Toughness Influence Ingestive Patterns in Lemurs. [PDF]

open access: yesAm J Primatol
Initial bite placement is influenced by food toughness and geometry. Species‐specific feeding strategies reflect differences in masticatory morphology and functional flexibility. Lemur catta is more likely to use the postcanine tooth row; Propithecus verreauxi prefers anterior biting. ABSTRACT We investigate the extent to which food toughness, geometry,
Fogaça MD   +4 more
europepmc   +2 more sources

A Discrete Representation of the Second Fundamental Form

open access: yesMathematics, 2022
We present a new method to obtain a combinatorial representation for the behaviour of a submanifold isometrically immersed in a Riemannian manifold based on the second fundamental form.
Alfonso Carriazo   +2 more
doaj   +1 more source

Extended Hamilton–Jacobi Theory, Symmetries and Integrability by Quadratures

open access: yesMathematics, 2021
In this paper, we study the extended Hamilton–Jacobi Theory in the context of dynamical systems with symmetries. Given an action of a Lie group G on a manifold M and a G-invariant vector field X on M, we construct complete solutions of the Hamilton ...
Sergio Grillo   +2 more
doaj   +1 more source

Reduction of Homogeneous Pseudo-Kähler Structures by One-Dimensional Fibers

open access: yesAxioms, 2020
We study the reduction procedure applied to pseudo-Kähler manifolds by a one dimensional Lie group acting by isometries and preserving the complex tensor. We endow the quotient manifold with an almost contact metric structure. We use this fact to connect
José Luis Carmona Jiménez   +1 more
doaj   +1 more source

Generating punctured surface triangulations with degree at least 4

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2022
As a sequel of a previous paper by the authors, we present here a generating theorem for the family of triangulations of an arbitrary punctured surface with vertex degree ≥ 4.
Chávez María-José   +3 more
doaj   +1 more source

On the Significance of the Stress–Energy Tensor in Finsler Spacetimes

open access: yesUniverse, 2022
We revisit the physical arguments that led to the definition of the stress–energy tensor T in the Lorentz–Finsler setting (M,L) starting with classical relativity.
Miguel Ángel Javaloyes   +2 more
doaj   +1 more source

Metric f-Contact Manifolds Satisfying the (κ, μ)-Nullity Condition

open access: yesMathematics, 2020
We prove that if the f-sectional curvature at any point of a ( 2 n + s ) -dimensional metric f-contact manifold satisfying the ( κ , μ ) nullity condition with n > 1 is independent of the f-section at the point, then it is constant
Alfonso Carriazo   +2 more
doaj   +1 more source

The Rigging Technique for Null Hypersurfaces

open access: yesAxioms, 2021
Starting from the main definitions, we review the rigging technique for null hypersurfaces theory and most of its main properties. We make some applications to illustrate it.
Manuel Gutiérrez, Benjamín Olea
doaj   +1 more source

Foundations of Finsler Spacetimes from the Observers’ Viewpoint

open access: yesUniverse, 2020
Physical foundations for relativistic spacetimes are revisited in order to check at what extent Finsler spacetimes lie in their framework. Arguments based on inertial observers (as in the foundations of special relativity and classical mechanics) are ...
Antonio N. Bernal   +2 more
doaj   +1 more source

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