G Paternain, M Paternain - Commentarii Mathematici Helvetici, 1997 - elibrary.ru
Let M be a closed manifold and $ L: TM\rightarrow\bf {R} $ a convex superlinear Lagrangian.
We consider critical values of Lagrangians as defined by R. Mane in [5]. Let cu 5>(L) denote …