| [1] | Contents. |
| 3-10 | Weak convergence in Hoffmann-Jorgensen sense. Lachout, Petr |
| 11-15 | A note on multivalued Baire category theorem. Urbaniec, Piotr |
| 17-29 | About the heart of a hypergroup. Corsini, Piergiulio; Leoreanu, Violeta |
| 31-40 | Bijective reflexions and coreflexions of commutative unars. Ježek, Jaroslav; Kepka, Tomáš |
| 41-62 | Groupoids and the associative law XII. (Representable cardinal functions). Ježek, Jaroslav; Kepka, Tomáš |