1. Universal Horn classes and antivarieties of algebraic systems

   • V. A. Gorbunov
   • A. V. Kravchenko

   OriginalPaper Pages: 1 - 11

2. Horn classes of predicate systems and varieties of partial algebras

   • V. A. Gorbunov
   • M. S. Sheremet

   OriginalPaper Pages: 12 - 25

3. Quasivarieties of Sugihara semilattices with involution

   • W. Dziobiak

   OriginalPaper Pages: 26 - 36

4. Lattice properties preserved under free products

   • Yu. L. Ershov

   OriginalPaper Pages: 37 - 41

5. Infinite groups with Abelian centralizers of involutions

   • V. D. Mazurov

   OriginalPaper Pages: 42 - 49

6. Unbounded semidistributive lattices

   • J. B. Nation

   OriginalPaper Pages: 50 - 53

7. Lattices with unique irreducible decompositions

   • M. V. Semyonova

   OriginalPaper Pages: 54 - 60

8. Varieties defined by permutations

   • D. M. Smirnov

   OriginalPaper Pages: 61 - 70

9. Sessions of the seminar “Algebra i Logika”

   Report Pages: 71 - 71