Results 11 to 20 of about 375,845 (279)
Twin Vector Fields and Independence of Spectra for Quadratic Vector Fields [PDF]
Journal of Dynamical and Control Systems, 2016 The object of this paper is to address the following question: When is a polynomial vector field on $\mathbb{C}^2$ completely determined (up to affine equivalence) by the spectra of its singularities? We will see that for quadratic vector fields this is not the case: given a generic quadratic vector field there is, up to affine equivalence, exactly one
Valente Ramírez
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Field Theories from the Relativistic Law of Motion [PDF]
, 2001 From the relativistic law of motion we attempt to deduce the field theories corresponding to the force law being linear and quadratic in 4-velocity of the particle.
Dadhich, Naresh, Singh, Parampreet
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An Innovative Approach to Estimate Chloride Diffusion Coefficient in Submerged Concrete Structures Using Soft Computing [PDF]
Journal of Rehabilitation in Civil Engineering, 2023 Corrosion is one of the most important and common factors in the destruction of structures. Among all kinds of structures, corrosion of submerged structures is of great importance and prevalence due to the impossibility of direct visibility, high ...
Seyyed Ali Habibi +2 more
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Darboux Integrability and Reversible Quadratic Vector Fields
Rocky Mountain Journal of Mathematics, 2005 The authors study the Darboux theory of integrability for reversible polynomial vector fields in \({\mathbb R}^n\). In particular, they define the concept of \(\varphi\)-reversible vector fields for a given involution \(\varphi\) and show that if \(X\) is a \(\varphi\)-reversible quadratic vector field in \({\mathbb R}^2\) such that the set of fixed ...
Llibre, Jaume, Medrado, João Carlos
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Higgsed Stueckelberg vector and Higgs quadratic divergence
Physics Letters B, 2015 Here we show that, a hidden vector field whose gauge invariance is ensured by a Stueckelberg scalar and whose mass is spontaneously generated by the Standard Model Higgs field contributes to quadratic divergences in the Higgs boson mass squared, and even
Durmuş Ali Demir +2 more
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Black hole solutions in the quadratic Weyl conformal geometric theory of gravity
European Physical Journal C: Particles and Fields, 2022 We consider numerical black hole solutions in the Weyl conformal geometry and its associated conformally invariant Weyl quadratic gravity. In this model, Einstein gravity (with a positive cosmological constant) is recovered in the spontaneously broken ...
Jin-Zhao Yang +2 more
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Modeling of the Temperature Regimes in a Layered Bimetallic Plate under Short-Term Induction Heating
Energies, 2023 A mathematical model for determining the temperature field of a bimetallic plate with plane-parallel boundaries during short-term induction heating by a non-stationary electromagnetic field is proposed. Initial boundary value problems for determining the
Roman Musii +4 more
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Stability in quadratic torsion theories
European Physical Journal C: Particles and Fields, 2017 We revisit the definition and some of the characteristics of quadratic theories of gravity with torsion. We start from a Lagrangian density quadratic in the curvature and torsion tensors.
Teodor Borislavov Vasilev +3 more
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Hilbert′s 16th Problem for Quadratic Vector Fields
Journal of Differential Equations, 1994 The second part of Hilbert's 16th problem is to determine the number and relative position of the limit cycles of a polynomial vector field in the plane. This problem remains open even for the case of a vector field whose components are quadratic polynomials.
Dumortier, F. +2 more
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Stable Isotropic Cosmological Singularities in Quadratic Gravity [PDF]
, 2007 We show that, in quadratic lagrangian theories of gravity, isotropic cosmological singularities are stable to the presence of small scalar, vector and tensor inhomogeneities. Unlike in general relativity, a particular exact isotropic solution is shown to
A. A. Starobinsky +10 more
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