Sommaire

Contents
On cyclic hypergroups with period
p. 3-7
Constructions d'hyperanneaux à partir d'anneaux
p. 9-13
$P$-hypergoupes
p. 15-20
Cancellative relations and matrices
p. 21-31
On generalized fuzzy relation equations: necessary and sufficient conditions for the existence of solutions
p. 33-37
On Bumby's equation $(x^2 - 2)^2 - 2=2y^2$: a solution via pythagorean triples
p. 39-40
Low-temperature cycling and its effect on structural state and mechanical properties of metals and alloys
p. 41-55
Alternative definitions of $J$-density topology
p. 57-61