1. Group representations in certain lattices of propositions

   • J. P. Leveille
   • P. Roman

   OriginalPaper Pages: 73 - 90

2. Application of Kemmer-β formalism to spin-1/2 systems

   • M. Samiullah
   • K. G. Khalili

   OriginalPaper Pages: 91 - 96

3. Lie algebras and representations of continuous groups

   • D. E. Littlewood

   OriginalPaper Pages: 97 - 109

4. A possible gravitational Planck's constant

   • Antonio Zecca

   OriginalPaper Pages: 111 - 113

5. The Hubble law and the spiral structures of galaxies from equations of motion in general relativity

   • Mendel Sachs

   OriginalPaper Pages: 115 - 135

6. Spinor methods in conformal Killing transport

   • Kenza Dighton

   OriginalPaper Pages: 137 - 144