Affiliation:
1. Department of Mathematics, Luleå University of Technology, SE-971 87 Luleå, Sweden
Abstract
The general d'Alembert equation □u + f (x0, x1, u) = 0 is considered, where □ is the two-dimensional d'Alembert operator. We classify the equation for functions f by which it admits several Lie symmetry algebras, which include the Lorentz symmetry generator. The corresponding symmetry reductions are listed.
Publisher
World Scientific Pub Co Pte Lt
Subject
Astronomy and Astrophysics,Nuclear and High Energy Physics,Atomic and Molecular Physics, and Optics