1. Circular matrices, duality theorems and the reality of Clebsch-Gordan coefficients

   • R. P. Bickerstaff

   OriginalPaper Pages: 1 - 6

2. On factorization properties of algebraic spinors

   • P. Budinich
   • L. Dabrowski

   OriginalPaper Pages: 7 - 11

3. Poisson brackets for lagrangians linear in the velocity

   • M. J. Bergvelt
   • E. A. De Kerf

   OriginalPaper Pages: 13 - 19

4. Schrödinger particle on a half line

   • P. Šeba

   OriginalPaper Pages: 21 - 27

5. On the existence of KMS states

   • S. L. Woronowicz

   OriginalPaper Pages: 29 - 31

6. On the Robinson theorem and shearfree geodesic null congruences

   • Jacek Tafel

   OriginalPaper Pages: 33 - 39

7. Failure of reflection positivity in the quantum Heisenberg ferromagnet

   • Eugene R. Speer

   OriginalPaper Pages: 41 - 47

8. Classical solutions of higher-dimensional nonlinear sigma models on spheres

   • Kazuyuki Fujii

   OriginalPaper Pages: 49 - 54

9. Positivity of energy inn-dimensional Lorentzian spaces

   • A. H. Taub

   OriginalPaper Pages: 55 - 62

10. Aq-difference analogue of U(g) and the Yang-Baxter equation

    • Michio Jimbo

    OriginalPaper Pages: 63 - 69

11. New upper bounds for the magnetization in ferromagnetic one-component systems

    • J. O. Vigfusson

    OriginalPaper Pages: 71 - 77

12. Axial anomaly and index theorem for Dirac-Kähler fermions

    • Cesar A. Linhares
    • Juan A. Mignaco
    • M. A. Rego Monteiro

    OriginalPaper Pages: 79 - 85

13. Quantum OSP-invariant nonlinear Schrödinger equation

    • P. P. Kulish

    OriginalPaper Pages: 87 - 93