Method of characteristics and first integrals for systems of quasi-linear partial differential equations of first order

Autor: Chong-Kyu Han, Jong-Do Park
Rok vydání: 2014
Předmět:
Zdroj: Science China Mathematics. 58:1665-1676
ISSN: 1869-1862
1674-7283
DOI: 10.1007/s11425-014-4942-8
Popis: Given a set of independent vector fields on a smooth manifold, we discuss how to find a function whose zero-level set is invariant under the flows of the vector fields. As an application, we study the solvability of overdetermined partial differential equations: Given a system of quasi-linear PDEs of first order for one unknown function we find a necessary and sufficient condition for the existence of solutions in terms of the second jet of the coefficients. This generalizes to certain quasi-linear systems of first order for several unknown functions.
Databáze: OpenAIRE