Results 101 to 110 of about 336,880 (200)
Open Physics, 2020 In this work, we perform Lie group analysis on a fifth-order integrable nonlinear partial differential equation, which was recently introduced in the literature and contains two dispersive terms.
Simbanefayi Innocent +1 more
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Covariant conservation laws, local invariance and Noether’s second theorem
European Physical Journal C: Particles and FieldsWe lay down a set of requirements for a field theory to produce a covariant conservation law out of Noether’s second theorem, and show that neither local invariance implies a covariant conservation law, nor the existence of a covariant conservation law ...
Nuno Barros e Sá +2 more
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Loss of pseudo-momentum, energy-release rate and the effective mass of a moving dislocation. [PDF]
Philos Trans A Math Phys Eng Sci, 2023 Markenscoff X.
europepmc +1 more source
An Extension of the Noether-Deuring Theorem [PDF]
Proceedings of the American Mathematical Society, 1972 Let R R be a commutative semilocal noetherian ring,
openaire +1 more source
Transformation groups and the virial theorem [PDF]
, 1972 A generalization of Noether's result for classical mechanics is given, which shows that the virial theorem is related to an invariance property of the Lagrange function.
Kampen, N.G. van, N.G. van Kampen
core +1 more source
Conserved quantities of Euler-Lagrange system via complex Lagrangian. [PDF]
Heliyon, 2023 Farooq MU, Naseem A, Wafo Soh C.
europepmc +1 more source
Equivariance, Variational Principles, and the Feynman Integral
Symmetry, Integrability and Geometry: Methods and Applications, 2008 We argue that the variational calculus leading to Euler's equations and Noether's theorem can be replaced by equivariance and invariance conditions avoiding the action integral.
George Svetlichny
doaj
Noether's theorem and the inverse problem of Lagrangian mechanics
, 1983 We discuss Noether's theorem in classical mechanics and the inverse problem of Lagrangian mechanics. We further look at different aspects of the problem of relating symmetries and first integrals of second-order equations to the search for a ...
Sarlet, Willy
core
Higher-Stage Noether Identities and Second Noether Theorems [PDF]
Advances in Mathematical Physics, 2015 The direct and inverse second Noether theorems are formulated in a general case of reducible degenerate Grassmann-graded Lagrangian theory of even and odd variables on graded bundles. Such Lagrangian theory is characterized by a hierarchy of nontrivial higher-stage Noether identities which is described in the homology terms.
openaire +2 more sources
Exact solutions of equal-width equation and its conservation laws
Open Physics, 2019 In this work we investigate the equal-width equation, which is used for simulation of (1-D) wave propagation in non-linear medium with dispersion process.
Khalique Chaudry Masood +2 more
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