1 Table of Contents: “... of the Neumann Operator -- 3 John d’Angelo: CR-Complexity and Hyperquadric Maps -- 4 Hajer Bahouri: Logarithmic...”

2 Table of Contents: “...Preliminaries -- Spin geometry on four-manifolds -- Global analysis of the Seiberg-Witten equations...”

3 Table of Contents: “... at metrics -- Analytical properties for degenerate equations -- On the existence problem of Einstein-Maxwell...”

4 Table of Contents: “... equations / V.V. Filippov -- The interplay between compact spaces and the Banach spaces of their continuous...”