The present volume is an attempt to unify various known aspects of the classical Hamilton-Jacobi equations and to present recent results and
methods.
I wish to thank Mrs Thuillier for her competent typing of an often
poorly written manuscript; many colleagues, collaborators and friends who
helped me to improve the presentation of these notes; and, last but not
least, my wife Lila to whom, after partially ruined vacations during the
writing of the manuscript, this book is dedicated.