Some Basic Tools
Throughout the book we rely on various tools and general concepts which are explicited once and for all in this chapter: some lemmas on differential and integral inequalities, a uniformization lemma for Łojasiewicz type inequalities, the definition and main properties of semi-Fredholm operators and analytic maps from a Banach space to another.
- 3.H. Brézis, Functional Analysis, Sobolev Spaces and Partial Differential Equations. Universitext (Springer, New York, 2011)Google Scholar