Sommaire

Stability of abstract differential equations with the right-hand side smooth in the time variable
p. 171-193
The maximal regular ideal of the semigroup of binary relations
p. 194-198
Congruences on conventional semigroups
p. 199-205
Prime selectors in lattice-ordered groups
p. 206-217
Homopolar circuits in polar graphs
p. 218-228
On quasi-Riemannian fiber manifold
p. 229-240
A Cauchy type condition and integrability
p. 241-274
Multivalued mappings and Filippov's operation
p. 275-288
Bifurcations and biological observables
p. 289-300
Decomposition of isometries of isotropic $U_n(V)$ over finite fields into simple isometries
p. 301-305
On value selectors and torsion classes of lattice ordered groups
p. 306-313
Semi-continuity and weak-continuity
p. 314-321
On Segal's postulates for general quantum mechanics
p. 322-324
Prime selectors and torsion classes of lattice ordered groups
p. 325-337
Academician Štefan Schwarz awarded the 1980 National Prize of the Slovak Socialist Republic
p. 338-339