Sur la valuation striate des hypergroups polysymetriques canoniques J. Mittas, pag. 5 |
Ideals in a semihypergroup and Green’ s relation |
Hypercompositional structures from the computer theory G. G. Massouros, pag. 37 |
Closure system and closure hypergroups, D. Lenzi, pag. 43 |
On some applications of fuzzy sets and commutative hypergroups to evaluation in architecture and town-planning, B. Ferri e A. Maturo, pag. 51 |
Homomorphic relations on hyperringoids and join hyperrings G. G. Massouros e C. G. Massouros, pag. 61 |
Lower and upper approximation in H – groups B. Davvaz, pag. 71 |