Results 21 to 30 of about 2,015,397 (315)

Discrete Symmetry Group Approach for Numerical Solution of the Heat Equation

open access: yesSymmetry, 2020
In this article, an invariantized finite difference scheme to find the solution of the heat equation, is developed. The scheme is based on a discrete symmetry transformation.
Khudija Bibi, T. Feroze
semanticscholar   +1 more source

Particular Solutions of Ordinary Differential Equations Using Discrete Symmetry Groups

open access: yesSymmetry, 2020
This article explains how discrete symmetry groups can be directly applied to obtain the particular solutions of nonlinear ordinary differential equations (ODEs).
Khudija Bibi
semanticscholar   +1 more source

Reduction in optimal control with broken symmetry for collision and obstacle avoidance of multi-agent system on Lie groups

open access: yesCommunications in Analysis and Mechanics, 2023
We study the reduction by symmetry for optimality conditions in optimal control problems of left-invariant affine multi-agent control systems, with partial symmetry breaking cost functions for continuous-time and discrete-time systems.
Efstratios Stratoglou   +2 more
doaj   +1 more source

Exact Solutions of Newell-Whitehead-Segel Equations Using Symmetry Transformations

open access: yesJournal of Function Spaces, 2021
In this article, Lie and discrete symmetry transformation groups of linear and nonlinear Newell-Whitehead-Segel (NWS) equations are obtained. By using these symmetry transformation groups, several group invariant solutions of considered NWS equations ...
Khudija Bibi, Khalil Ahmad
doaj   +1 more source

Neutrino mass and mixing with discrete symmetry [PDF]

open access: yesReports on progress in physics. Physical Society, 2013
This is a review paper about neutrino mass and mixing and flavour model building strategies based on discrete family symmetry. After a pedagogical introduction and overview of the whole of neutrino physics, we focus on the PMNS mixing matrix and the ...
S. King, C. Luhn
semanticscholar   +1 more source

A symmetry algebra in double-scaled SYK [PDF]

open access: yesSciPost Physics, 2023
The double-scaled limit of the Sachdev-Ye-Kitaev (SYK) model takes the number of fermions and their interaction number to infinity in a coordinated way.
Henry W. Lin, D. Stanford
semanticscholar   +1 more source

METHOD FOR ASSESSING THE SYMMETRY OF OBJECTS ON DIGITAL BINARY IMAGES BASED ON FOURIER DESCRIPTOR [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
In this paper we solve the problem of finding the symmetry axis of the object in a digital binary image. A new axial symmetry criterion is formulated for a connected discrete object.
L. Mestetskiy, A. Zhuravskaya
doaj   +1 more source

Flocking with discrete symmetry: The two-dimensional active Ising model. [PDF]

open access: yesPhysical review. E, Statistical, nonlinear, and soft matter physics, 2015
We study in detail the active Ising model, a stochastic lattice gas where collective motion emerges from the spontaneous breaking of a discrete symmetry.
A. Solon, J. Tailleur
semanticscholar   +1 more source

Lagrangian reduction of discrete mechanical systems by stages [PDF]

open access: yes, 2015
In this work we introduce a category of discrete Lagrange--Poincare systems LP_d and study some of its properties. In particular, we show that the discrete mechanical systems and the discrete mechanical systems obtained by the Lagrangian reduction of ...
Fernandez, Javier   +2 more
core   +2 more sources

Insulators and Metals With Topological Order and Discrete Symmetry Breaking [PDF]

open access: yes, 2017
Numerous experiments have reported discrete symmetry breaking in the high temperature pseudogap phase of the hole-doped cuprates, including breaking of one or more of lattice rotation, inversion, or time-reversal symmetries.
S. Chatterjee, S. Sachdev
semanticscholar   +1 more source

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