1. Deductive systems and categories

   • Joachim Lambek

   OriginalPaper Pages: 287 - 318

2. Equivariant maps onto minimal flows

   • P. J. Kahn
   • A. W. Knapp

   OriginalPaper Pages: 319 - 324

3. On finite 0-simple semigroups and graph theory

   • R. L. Graham

   OriginalPaper Pages: 325 - 339

4. On regular expressions and regular canonical systems

   • Arto Salomaa

   OriginalPaper Pages: 341 - 355

5. On some metamathematical results as properties of general systems

   • Mihajlo D. Mesarović

   OriginalPaper Pages: 357 - 361

6. Linearization of locally compact transformation groups in Hilbert space

   • P. C. Baayen
   • J. de Groot

   OriginalPaper Pages: 363 - 379

7. Yet another proof of the cascade decomposition theorem for finite automata: Correction

   • Paul Zeiger

   Erratum Pages: 381 - 381

8. Invariance for ordinary differential equations: Correction

   • James A. Yorke

   Erratum Pages: 381 - 381