Results 11 to 20 of about 185,528 (178)
Abelian integrals of quadratic hamiltonian vector fields with an invariant straight line [PDF]
Publicacions Matemàtiques, 1995 We prove that the lowest upper bound for the number of isolated zeros of the Abelian integrals associated to quadratic Hamiltonian vector fields having a center and an invariant straight line after quadratic perturbations is ...
Li, C., Llibre, Jaume, Zhang, Z.
openaire +7 more sources
Classification of cubic differential systems with invariant straight lines of total multiplicity eight and two distinct infinite singularities [PDF]
Electronic Journal of Qualitative Theory of Differential Equations, 2015 In this article we prove a classification theorem (Main theorem) of real planar cubic vector fields which possess two distinct infinite singularities (real or complex) and eight invariant straight lines, including the line at infinity and including ...
Cristina Bujac, Nicolae Vulpe
doaj +3 more sources
Wilson lines in the MHV action
Journal of High Energy Physics, 2017 The MHV action is the Yang-Mills action quantized on the light-front, where the two explicit physical gluonic degrees of freedom have been canonically transformed to a new set of fields.
P. Kotko, A. M. Stasto
doaj +3 more sources
Comptes Rendus. Mathématique, 2019 We classify the phase portraits of the quadratic polynomial differential systems having an invariant parabola, an invariant straight line, and a Darboux first integral produced by these two invariant curves.
Llibre, Jaume +1 more
openaire +4 more sources
Modeling the contour arc based on Dezargues configuration [PDF]
Омский научный вестник, 2022 A new geometric algorithm for modeling the contour arc in the form of a curve of one relationship based on the Dezargues configuration, parameterization of which is performed using the mathematical apparatus "Point Calculus", is proposed.
E. V. Konopatskiy, I. G. Balyuba
doaj +1 more source
Quadratic Planar Systems with Two Parallel Invariant Straight Lines
Qualitative Theory of Dynamical Systems, 2008 In this paper, we classify the global phase portraits of all quadratic planar systems with two parallel invariant straight lines. The main techniques used are Poincare Compactification and Normal Forms Theory combined with the Neumann’s Theorem.
Buzzi, Claudio A., Tonon, Durval J.
openaire +3 more sources
Journal of High Energy Physics, 2023 Previous studies have shown that a gauge-invariant correlation function of two chromoelectric fields connected by a straight timelike adjoint Wilson line encodes crucial information about quark-gluon plasma (QGP) that determines the dynamics of small ...
Govert Nijs +2 more
doaj +1 more source
Acta et Commentationes: Ştiinţe Exacte şi ale Naturii, 2023 The present study delves into the investigation of phase portraits of polynomial differential systems, which are systems of differential equations of the form $\frac{dx}{dt} = P(x,y), \frac{dy}{dt} = Q(x,y)$, where $x$ and $y$ are the dependent ...
Vadim Repeșco
doaj +1 more source
AN APPROACH TO ALLEVIATE THE FALSE ALARM IN BUILDING CHANGE DETECTION FROM URBAN VHR IMAGE [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 Building change detection from very-high-resolution (VHR) urban remote sensing image frequently encounter the challenge of serious false alarm caused by different illumination or viewing angles in bi-temporal images.
J. Chen, J. L. Hou, M. Deng
doaj +1 more source
Optical vortices with an infinite number of screw dislocations
Компьютерная оптика, 2021 In optical data transmission with using vortex laser beams, data can be encoded by the topological charge, which is theoretically unlimited. However, the topological charge of a single separate vortex (screw dislocation) is limited by possibilities of ...
A.A. Kovalev
doaj +1 more source