1. This special issue is dedicated to Paul Adrien Maurice Dirac on the occasion of his 80th birthday

   • A. R. Marlow

   Announcement Pages: 755 - 756

2. Semiclassical expanding discrete space-times

   • Wesley K. Cobb
   • Larry L. Smalley

   OriginalPaper Pages: 757 - 763

3. Electrodynamics: A consequence of nonlinear realizations of the Lorentz group

   • Bill Dalton

   OriginalPaper Pages: 765 - 790

4. Generalizations of gravitational theory based on group covariance

   • Leopold Halpern

   OriginalPaper Pages: 791 - 802

5. Quantum mechanics and geometric analysis on manifolds

   • Robert Hermann

   OriginalPaper Pages: 803 - 828

6. Wave equation of symmetry constrained Dirac particles

   • Jaime Keller

   OriginalPaper Pages: 829 - 836

7. Relativity from quantum theory

   • A. R. Marlow

   OriginalPaper Pages: 837 - 849

8. Covariant chronogeometry and extreme distances. III. Macro-micro relations

   • I. E. Segal

   OriginalPaper Pages: 851 - 869

9. Relativity and quantum mechanics

   • Hüseyin Yilmaz

   OriginalPaper Pages: 871 - 902