1. Absence of discrete spectrum in highly negative ions

   • Mary Beth Ruskai

   OriginalPaper Pages: 457 - 469

2. The spectral class of the quantum-mechanical harmonic oscillator

   • H. P. McKean
   • E. Trubowitz

   OriginalPaper Pages: 471 - 495

3. Pure states as a dual object forC*-algebras

   • Frederic W. Shultz

   OriginalPaper Pages: 497 - 509

4. Quasi-free photon states and the Poincaré group

   • W. J. M. A. Hochstenbach

   OriginalPaper Pages: 511 - 521

5. Horseshoes in perturbations of Hamiltonian systems with two degrees of freedom

   • Philip J. Holmes
   • Jerrold E. Marsden

   OriginalPaper Pages: 523 - 544

6. Proof of confinement of static quarks in 3-dimensionalU(1) lattice gauge theory for all values of the coupling constant

   • Markus Göpfert
   • Gerhard Mack

   OriginalPaper Pages: 545 - 606