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Lambda-symmetries of Dynamical Systems, Hamiltonian and Lagrangian equations

Authors
  • Cicogna, Giampaolo
Type
Preprint
Publication Date
Feb 16, 2011
Submission Date
Feb 16, 2011
Identifiers
arXiv ID: 1102.3269
Source
arXiv
License
Yellow
External links

Abstract

After a brief survey of the definition and the properties of Lambda-symmetries in the general context of dynamical systems, the notion of "Lambda-constant of motion'' for Hamiltonian equations is introduced. If the Hamiltonian problem is derived from a Lambda-invariant Lagrangian, it is shown how the Lagrangian Lambda-invariance can be transferred into the Hamiltonian context and shown that the Hamiltonian equations turn out to be Lambda-symmetric. Finally, the "partial'' (Lagrangian) reduction of the Euler-Lagrange equations is compared with the reduction obtained for the corresponding Hamiltonian equations.

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