Issue dedicated to Professor Jiří Rosický
| 309-334 | A logic of orthogonality. Adámek, Jiří; Hébert, M.; Sousa, L. | 
| 335-356 | Initial normal covers in bi-Heyting toposes. Borceux, Francis; Bourn, Dominique; Johnstone, Peter | 
| 357-386 | On universality of semigroup varieties. Demlová, Marie; Koubek, Václav | 
| 387-396 | Relative commutator associated with varieties of $n$-nilpotent and of $n$-solvable groups. Everaert, Tomas; Gran, Marino | 
| 397-408 | Natural weak factorization systems. Grandis, Marco; Tholen, Walter | 
| 409-418 | Sublocale sets and sublocale lattices. Picado, Jorge; Pultr, Aleš | 
| 419-425 | On corings and comodules. Porst, Hans-E. | 
| 427-440 | Clone properties of topological spaces. Trnková, Věra |