1. Blocks and commutators in orthomodular lattices

   • Günter Bruns
   • Richard Greechie

   OriginalPaper Pages: 1 - 9

2. Free lattices over join-trivial partial lattices

   • J. Ježek
   • V. Slavík

   OriginalPaper Pages: 10 - 31

3. Maximal chains in interval algebras

   • Sabine Koppelberg

   OriginalPaper Pages: 32 - 43

4. How many variables does a quasivariety need?

   • Jiří Adámek

   OriginalPaper Pages: 44 - 48

5. Directoids: algebraic models of up-directed sets

   • J. Ježek
   • R. Quackenbush

   OriginalPaper Pages: 49 - 69

6. On the two kinds of probability in algebra

   • Ralph Freese

   OriginalPaper Pages: 70 - 79

7. The consistency of “ℸCH +pa ≤ ω₁”

   • Piotr Koszmider

   OriginalPaper Pages: 80 - 87

8. The algebra of conditional logic

   • Fernando Guzmán
   • Craig C. Squier

   OriginalPaper Pages: 88 - 110

9. Hyperidentities for some varieties of semigroups

   • Shelly L. Wismath

   OriginalPaper Pages: 111 - 127

10. Congruence distributive quasivarieties whose finitely subdirectly irreducible members form a universal class

    • Janusz Czelakowski
    • Wiesław Dziobiak

    OriginalPaper Pages: 128 - 149

11. A note on free algebras of discriminator algebras

    • Steven Seif

    OriginalPaper Pages: 150 - 151