1. Editorial

   • Moshé Flato

   EditorialNotes Pages: 95 - 95

2. The barrier of meaning

   • Gian-Carlo Rota

   OriginalPaper Pages: 97 - 99

3. Speculations on some possible mathematical frameworks for the foundations of certain physical theories

   • S. Ulam

   OriginalPaper Pages: 101 - 106

4. An arithmetic operator and the functions on which it is part-bounded

   • P. D. T. A. Elliott

   OriginalPaper Pages: 107 - 110

5. Schubert polynomials and the Littlewood-Richardson rule

   • Alain Lascoux
   • Marcel-Paul Schützenberger

   OriginalPaper Pages: 111 - 124

6. Set-valued transformations of the unit sphere

   • Gilles Fournier
   • Mario Martelli

   OriginalPaper Pages: 125 - 134

7. Integration in finite terms: a method for determining regular fields for the risch algorithm

   • R. D. Richtmyer

   OriginalPaper Pages: 135 - 141

8. Computational synergetics and the exploration of nonlinear science

   • Norman J. Zabusky

   OriginalPaper Pages: 143 - 147

9. Ulam's redistribution of energy problem: Collision transformations

   • David Blackwell
   • R. Daniel Mauldin

   OriginalPaper Pages: 149 - 153

10. The stability problem: New results and counterexamples

    • Douglas Cenzer

    OriginalPaper Pages: 155 - 160

11. Well-posed two-phase flow equations with turbulence transport

    • Francis H. Harlow
    • Didier Besnard

    OriginalPaper Pages: 161 - 166

12. Conformal symplectic geometry, deformations, rigidity and geometrical (KMS) conditions

    • Henri Basart
    • André Lichnerowicz

    OriginalPaper Pages: 167 - 177

13. Integrable optical geometry

    • Ivor Robinson
    • Andrzej Trautman

    OriginalPaper Pages: 179 - 182

14. Poisson structure for the KdV equation

    • L. D. Faddeev
    • L. A. Takhtajan

    OriginalPaper Pages: 183 - 188

15. Exact solutions of nonrelativistic classical and quantum field theory with harmonic forces

    • Iwo Bialynicki-Birula

    OriginalPaper Pages: 189 - 194

16. Massive narrow resonance solutions of strongly coupled relativistic particles: a mechanism of mass generation

    • A. O. Barut

    OriginalPaper Pages: 195 - 199

17. Franck-Condon effect and squeezed-state physics as double-source interference phenomena

    • John Archibald Wheeler

    OriginalPaper Pages: 201 - 206

18. Cellular processing and satistical mechanics

    • S. Chen

    OriginalPaper Pages: 207 - 212

19. Antipursuit, metaxydiosis, and carcinogenesis

    • Z. A. Melzak

    OriginalPaper Pages: 213 - 223

20. Consideration of measurements and calculations involved in assessment of the effects of human exposure to low doses of ionizing radiation and other mutagens

    • Theodore T. Puck

    OriginalPaper Pages: 225 - 230

21. Stanislaw M. Ulam's contributions to theoretical theory

    • William A. Beyer
    • Peter H. Sellers
    • Michael S. Waterman

    OriginalPaper Pages: 231 - 242

22. Stanislaw Ulam: The warmth and brilliance of an eclectic mind

    • Leif H. Finkel
    • Gerald M. Edelman

    OriginalPaper Pages: 243 - 245