16 citations · 38 across the 4 of their papers we have counts for
4 papers
The evolution of spectral data for nonlinear Klein-Gordon models
P. H. S. Palheta, P. E. G. Assis, T. M. N. Gonçalves
We investigate the effect of the breaking of integrability in the integrals of motion of a sine-Gordon-like system. The class of quasi-integrable models, discussed in the literatur…
Moving Frames and Noether's Conservation Laws - the General Case
Tânia M. N. Gonçalves, Elizabeth L. Mansfield
In recent works, the authors considered various Lagrangians, which are invariant under a Lie group action, in the case where the independent variables are themselves invariant. Usi…
Moving Frames and Conservation Laws for Euclidean Invariant Lagrangians
Tania M. N. Goncalves, Elizabeth L. Mansfield
Noether's First Theorem yields conservation laws for Lagrangians with a variational symmetry group. The explicit formulae for the laws are well known and the symmetry group is know…
On Moving Frames and Noether's Conservation Laws
Tania M. N. Goncalves, Elizabeth L. Mansfield
Noether's Theorem yields conservation laws for a Lagrangian with a variational symmetry group. The explicit formulae for the laws are well known and the symmetry group is known to…