1. Preface

   • Giuseppe Dito
   • Daniel Sternheimer

   OriginalPaper Pages: 1 - 1

2. From Local Perturbation Theory to Hopf and Lie Algebras of Feynman Graphs

   • Alain Connes
   • Dirk Kreimer

   OriginalPaper Pages: 3 - 15

3. Poisson Geometry of Discrete Series Orbits, and Momentum Convexity for Noncompact Group Actions

   • Alan Weinstein

   OriginalPaper Pages: 17 - 30

4. Non-Abelian Symplectic Cuts and the Geometric Quantization of Noncompact Manifolds

   • Jonathan Weitsman

   OriginalPaper Pages: 31 - 40

5. The Donald–Flanigan Problem for Finite Reflection Groups

   • Murray Gerstenhaber
   • Anthony Giaquinto
   • Mary E. Schaps

   OriginalPaper Pages: 41 - 72

6. Retrospective on Quantization

   • Christian Frønsdal

   OriginalPaper Pages: 73 - 84