1. Triangular type ordered subalgebras in a column model

   • T.-Y. Dai

   Pages: 413 - 426

2. Gamma invariants for dense lattices

   • P. C. Eklof
   • J. Trlifaj

   Pages: 427 - 445

3. On quasi-invariant elements of a lattice

   • H. Feng
   • J. Wang

   Pages: 447 - 451

4. Maximal partial clones with no finite basis

   • F. Börner
   • L. Haddad

   Pages: 453 - 476

5. On a strong property of the weak subalgebra lattice

   • K. Pióro

   Pages: 477 - 495