ABSTRACT
Some properties of characteristic curves in connection with the viscosity solution of the Hamilton–Jacobi equation defined by the Hopf formula are studied. We are concerned with the points at which the solution u(t, x) is differentiable, and the strip of the form in the domain where u(t, x) is of class
Acknowledgements
The author would like to thank the VIASM for financial support and hospitality.
Notes
No potential conflict of interest was reported by the author.