Copyright © 2009 Alexandra K. Volosova and Konstantin Alexandrovich Volosov. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The new important property of wide class PDE was found solely by K. A. Volosov. We make an arbitrary replacement of variables. In the case of two independent variables x,t, then it always gives the possibility of expressing all PDE second and more order as AX=b. This is a linear algebraic equations system with regards derivatives to old variables x(ξ,δ), t(ξ,δ) on new variables ξ,δ:(xξ',xδ',tξ',tδ'). This system has the unique solution. In the case of three and more independent variables x,y,t,…, then it gives the possibility of expressing PDE second order as AX=b, if we do same compliment proposes. In the present paper, we suggest a new method for constructing closed formulas for exact solutions of PDE, then support on this important new property.