Table of Contents

Sign-Changing Yamabe-Type Problems: General Introduction; Results and Conditions; Conjecture 2 and Sketch of the Proof of Theorem 1; Outline; The Difference of Topology; Open Problems; Preliminary Estimates and Expansions, the Principal Terms; Preliminary Estimates; Proof of the Morse Lemma at Infinity when the Concentrations are Comparable; Proof of the Morse Lemma at Infinity; Contact Form Geometry: General Introduction; On the Dynamics of a Contact Structure Along a Vector Field of Its Kernel; Appendix 1; The Normal Form of ( , ) Near an Attractive Periodic Orbit of ; Compactness; Transmutations; On the Morse Index of a Functional Arising in Contact Form Geometry; and other chapters.