Philippe Yves Picard - Academia.edu (original) (raw)

Papers by Philippe Yves Picard

Journal of Nonlinear Mathematical Physics, 2007

Journal of Nonlinear Mathematical Physics, 2004

Journal of Mathematical Analysis and Applications, 2008

arXiv: Mathematical Physics, 2005

In this paper we use the symmetry reduction method to obtain invariant solutions of the ideal mag... more In this paper we use the symmetry reduction method to obtain invariant solutions of the ideal magnetohydrodynamic equations in (3+1) dimensions. These equations are invariant under a Galilean-similitude Lie algebra for which the classification by conjugacy classes of r-dimensional subalgebras ($1\leq r\leq 4$) was already known. So we restrict our study to the three-dimensional Galilean-similitude subalgebras that give systems composed of ordinary differential equations. We present here several examples of these solutions. Some of these exact solutions show interesting physical interpretations.

Journal of Nonlinear Mathematical Physics, 2007

Journal of Nonlinear Mathematical Physics, 2004

Journal of Mathematical Analysis and Applications, 2008

arXiv: Mathematical Physics, 2005

In this paper we use the symmetry reduction method to obtain invariant solutions of the ideal mag... more In this paper we use the symmetry reduction method to obtain invariant solutions of the ideal magnetohydrodynamic equations in (3+1) dimensions. These equations are invariant under a Galilean-similitude Lie algebra for which the classification by conjugacy classes of r-dimensional subalgebras ($1\leq r\leq 4$) was already known. So we restrict our study to the three-dimensional Galilean-similitude subalgebras that give systems composed of ordinary differential equations. We present here several examples of these solutions. Some of these exact solutions show interesting physical interpretations.