1. 2-perfectm-cycle systems can be equationally defined form=3, 5, and 7 only

   • D. E. Bryant
   • C. C. Lindner

   OriginalPaper Pages: 1 - 7

2. Undecidable fragments of elementary theories

   • A. Nies

   OriginalPaper Pages: 8 - 33

3. Hypergroupes de typeU et homologie de complexes

   • D. Freni
   • Y. Sureau

   OriginalPaper Pages: 34 - 62

4. A new approach to the lattice of convex sublattices of a lattice

   • S. Lavanya
   • S. Parameshwara Bhatta

   OriginalPaper Pages: 63 - 71

5. Separation in topological algebras

   • J. P. Coleman

   OriginalPaper Pages: 72 - 84

6. Distinguished extensions of a lattice-ordered group

   • R. N. Ball

   OriginalPaper Pages: 85 - 112

7. The minimal number of join irreducibles of a finite modular lattice

   • M. Wild

   OriginalPaper Pages: 113 - 123

8. On a finite basis problem for universal positive formulas

   • G. Mashevitzky

   OriginalPaper Pages: 124 - 140

9. Free monadic Tarski algebras

   • A. V. Figallo

   OriginalPaper Pages: 141 - 150

10. Bialgebraic contexts for finite distributive lattices

    • F. Vogt

    OriginalPaper Pages: 151 - 165