RT Journal Article
T1 Symmetries of discrete dynamical systems involving two species
A1 Gómez-Ullate Otaiza, David
A1 Lafortune, S.
A1 Winternitz, P.
AB The Lie point symmetries of a coupled system of two nonlinear differential-difference equations are investigated. It is shown that in special cases the symmetry group can be infinite dimensional, in other cases up to ten dimensional. The equations can describe the interaction of two long molecular chains, each involving one type of atoms.
PB American Institute of Physics
SN 0022-2488
YR 1999
FD 1999-06
LK https://hdl.handle.net/20.500.14352/59633
UL https://hdl.handle.net/20.500.14352/59633
LA eng
NO ©1999 American Institute of Physics.The authors thank D. Levi and M. A. Rodriguez for helpful discussions. The research of S.L. and P.W. was partly supported by the NSERC of Canadá and FCAR du Québec. S. L. would like to thank the Departamento de Física Teórica II de la Universidad Complutense for their hospitality during his stay in Madrid. D.G.U.’s work was partly supported by DGES Grant No. PB95-0401. He would like to express his gratitude to the Centre de Recherches Mathématiques for their kind hospitality
NO NSERC of Canadá
NO FCAR du Québec
NO DGES
DS Docta Complutense
RD 16 dic 2025