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HYPERSTRUCTURES AS TOOL TO COMPARE URBAN PROJECTS
No full textThe objective of this work is the application of theories of fuzzy sets and hyperstructures to the problem of selection among alternative urban projects, so to identify those ones pursue a predetermined set of heterogeneous objectives in the best way. The recourse to fuzzy sets depends on the consciousness that all the planning stages are in condition of uncertainty. So it is necessary to adopt techniques that permit to study the uncertainty about the influence that a decision could have on the validity of the project. The hyperstructures, instead, in this case represent a way to define sonic rules to choos
WEAK HYPERSTRUCTURES ON SMALL SETS
No full textThe class of the weak hyperstructures is larger than the known ones originated from the hypergroup in the sense of Marty. The weak hyperstructures are also called -structures. In this paper we deal with some classes ofH,-groups defined on sets with three elements
LES HYPERTREILLIS TRES FINS
No full textIn this paper, the very thin commutative idem-potent semigroups are characterized. As application, the structure of all very thin hyperlattices is determined
HYPER BCK-ALGEBR
No full textIn this note the notion of a hyper BCK-algebra which is a generalization of a BCK-algebra introduced, and some basic properties for this algebra are proved. Then the notions of P-ideals and hyper-congruence relations are introduced, and the relationship between them on a positive implicative hyper Bek-algebra with condition (8), are spec-ified
M-POLYSYMMETRICAL HYPERRINGS
No full textIn this paper a special case of canonical polysymmetrical hyperrings, the M-Polysymmetrical hyperrings, are studied and investigated in detail. Certain methods of their construction from rings are presented and a new class of hyperstructures, the M-Polysyrnrnetrical superrings, is intro-duced
On a first order unilateral evolutive periodic problem.
No full textWe consider the periodic problem related to a first orderevolutive variational equation and we study existence of solution
UN MODELLO MATERIALE DI NASTRO DI MOBIUS
No full textUn nastro di Mòbius si costruisce a partire da una striscia di cartarettangolare di lato "corto" h e lato "lungo" L. Fissato h si pone il problemadi trovare il minimo di L. Sperimentalmente si puo’ intuire che tale valoreminimo e‘ Lmin=h(sqrt(3)) , ma il dimostrarlo non e' banale ed accosta l'allievoa problematiche che presentano i tre aspetti di analisi sperimentale.formulazione del modello e risoluzione logico-deduttiva
ELEMENTI DI GEOMETRIE FINITE
No full textSi fa vedere come si può costruire la geometria analitica su un piano affìne finito. Vengono riportati risultati classici che però sono stati esposti in modo da essere compresi dagli alunni delle Scuole Medie Secondarie
UN IPERGRUPPO ASSOCIATO ALL’ INSIEME DELLE MATRICI QUADRATE DI ORDINE N NON SINGOLARI
No full textAn hyperaperation on the set of the not singular square matrices of the n-order has been assegnated. This hyperoperation induces in lhc set a structure of not commutative hypergraup
Sul concetto di lateralizzazione nelle iperstrutture.
No full textGiven an hypcrgroup (G,?) , we introduce the concept of lower/alert)! of A (non empty subset ol' G), having geG as representative. We introduce also the notion ol‘ y-hypergroup which characterize some hyperlaterals as supports ol' subhypergroups of the y-hypergroup itself