Results 21 to 30 of about 605,265 (316)

A computational group theoretic symmetry reduction package for the SPIN model checker [PDF]

open access: yes, 2006
Symmetry reduced model checking is hindered by two problems: how to identify state space symmetry when systems are not fully symmetric, and how to determine equivalence of states during search.
Miller, A   +6 more
core   +1 more source

A Variational Approach to an Inhomogeneous Second-Order Ordinary Differential System

open access: yesAbstract and Applied Analysis, 2013
This paper studies the coupled inhomogeneous Lane-Emden system from the Lagrangian formulation point of view. The existence of multiple positive solutions has been discussed in the literature.
B. Muatjetjeja, C. M. Khalique
doaj   +1 more source

Closed-Form Solutions and Conserved Vectors of a Generalized (3+1)-Dimensional Breaking Soliton Equation of Engineering and Nonlinear Science

open access: yesMathematics, 2020
In this article, we examine a (3+1)-dimensional generalized breaking soliton equation which is highly applicable in the fields of engineering and nonlinear sciences.
Chaudry Masood Khalique   +1 more
doaj   +1 more source

Detection of symmetry and anti-symmetry

open access: yesVision Research, 2005
To assess the role of second-order channels in symmetry perception we measured the effects of check size, spatial frequency content, eccentricity and grey scale range on the detection of symmetrical and anti-symmetrical patterns. Thresholds for symmetrical stimuli were only moderately affected by these manipulations.
Mancini, Sandra   +2 more
openaire   +2 more sources

On the solutions and conservation laws of the 2D breaking soliton equation of fluid mechanics

open access: yesPartial Differential Equations in Applied Mathematics, 2021
In this article, we study two-dimensional generalized breaking soliton equation, which describes two-dimensional interchange of Riemann wave disseminating alongside y-axis with a long wave disseminating alongside x-axis. We derive Lie symmetry generators
Karabo Plaatjie, Chaudry Masood Khalique
doaj   +1 more source

Langrangian formulation and solitary wave solutions of a generalized Zakharov–Kuznetsov equation with dual power-law nonlinearity in physical sciences and engineering

open access: yesJournal of Ocean Engineering and Science, 2023
This paper presents analytical studies carried out explicitly on a higher-dimensional generalized Zakharov–Kuznetsov equation with dual power-law nonlinearity arising in engineering and nonlinear science.
Chaudry Masood Khalique   +1 more
doaj   +1 more source

Symmetry impedes symmetry discrimination

open access: yesJournal of Vision, 2005
Objects in the world, natural and artificial alike, are often bilaterally symmetric. The visual system is likely to take advantage of this regularity to encode shapes for efficient object recognition. The nature of encoding a symmetric shape, and of encoding any departure from it, is therefore an important matter in visual perception. We addressed this
Tjan, B., Liu, Z.
openaire   +3 more sources

New Exact Solutions for a Generalized Double Sinh-Gordon Equation

open access: yesAbstract and Applied Analysis, 2013
We study a generalized double sinh-Gordon equation, which has applications in various fields, such as fluid dynamics, integrable quantum field theory, and kink dynamics. We employ the Exp-function method to obtain new exact solutions for this generalized
Gabriel Magalakwe   +1 more
doaj   +1 more source

Stability analysis, symmetry solutions and conserved currents of a two-dimensional extended shallow water wave equation of fluid mechanics

open access: yesPartial Differential Equations in Applied Mathematics, 2021
This paper analytically investigates a new (2+1)-dimensional extended shallow water wave equation. Lie group theory along with direct integration is used to achieve some solutions of the equation.
Oke Davies Adeyemo   +1 more
doaj   +1 more source

Unmixing Symmetries [PDF]

open access: yesPhysical Review Letters, 2020
The low-lying spectra of atomic nuclei display diverse behaviors, for example rotational bands, which can be described phenomenologically by simple symmetry groups such as spatial SU(3). This leads to the idea of dynamical symmetry, where the Hamiltonian commutes with the Casimir operator(s) of a group, and is block-diagonal in subspaces defined by the
openaire   +3 more sources

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