1. Conjugate Loci of Pseudo-Riemannian 2-Step Nilpotent Lie Groups with Nondegenerate Center

   • Changrim Jang
   • Phillip E. Parker

   OriginalPaper Pages: 1 - 18

2. The Problem of Prescribed Critical Functions

   • Emmanuel Humbert
   • Michel Vaugon

   OriginalPaper Pages: 19 - 34

3. A Class of Surfaces with Flat Blaschke Metric and Their Characterization

   • A. MartÍnez
   • F. MilÁn
   • L. Vrancken

   OriginalPaper Pages: 35 - 57

4. Integrability of Analytic Almost Complex Structures on Banach Manifolds

   • Daniel BeltiŢĂ

   OriginalPaper Pages: 59 - 73

5. Energy and Foliations on Riemann Surfaces

   • Amine Fawaz

   OriginalPaper Pages: 75 - 89

6. The Rough Laplacian and Harmonicity of Hopf Vector Fields

   • Domenico Perrone

   OriginalPaper Pages: 91 - 106