1. Weakly representable relation algebras form a variety

   • Bertalan Pécsi

   OriginalPaper 17 March 2009 Pages: 369 - 380

2. The Blok–Ferreirim theorem for normal GBL-algebras and its application

   • P. Jipsen
   • F. Montagna

   OriginalPaper 17 March 2009 Pages: 381 - 404

3. Value quotients and product torsion classes of lattice-ordered groups

   • Michael R. Darnel

   OriginalPaper 14 April 2009 Pages: 405 - 423

4. Bifunctional-elementary relation algebras

   • Mohamed El Bachraoui

   OriginalPaper 24 March 2009 Pages: 425 - 438

5. Cancellation in entropic algebras

   • M. M. Stronkowski

   OriginalPaper 16 March 2009 Pages: 439 - 468

6. Sums, products and negations of contexts and complete lattices

   • Konrad Deiters
   • Marcel Erné

   OriginalPaper 14 April 2009 Pages: 469 - 496