1. Well-Posedness in Sobolev Spaces for Second-Order Strictly Hyperbolic Equations with Nondifferentiable Oscillating Coefficients

   • Fumihiko Hirosawa
   • Michael Reissig

   OriginalPaper Pages: 99 - 119

2. Spectral Flow, Maslov Index and Bifurcation of Semi-Riemannian Geodesics

   • Paolo Piccione
   • Alessandro Portaluri
   • Daniel V. Tausk

   OriginalPaper Pages: 121 - 149

3. Mapping Properties of the Laplacian in Sobolev Spaces of Forms on Complete Hyperbolic Manifolds

   • Joaquim Bruna
   • Joan Girbau

   OriginalPaper Pages: 151 - 176

4. Generalised Einstein Equations and Prescribed Relations for the First Chern Weil Form

   • Daniel Pons

   OriginalPaper Pages: 177 - 200