Geodesic
On some Hypergroups and their Hyperlattice Structures
Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 3 (2003), pp. 15-24

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Let $G$ be a hypergroup and $\mathcal{L}(G)$ be the set of all subhypergroups of $G$. In this survey article, we introduce some hypergroups $G$ from combinatorial structures and study the structure of the set $\mathcal{L}(G)$. We prove that in some cases $\mathcal{L}(G)$ has a lattice or hyperlattice structure. 
@article{BASM_2003_3_a1,
     author = {G. A. Moghani and A. R. Ashrafi},
     title = {On some {Hypergroups} and their {Hyperlattice} {Structures}},
     journal = {Buletinul Academiei de \c{S}tiin\c{t}e a Republicii Moldova. Matematica},
     pages = {15--24},
     publisher = {mathdoc},
     number = {3},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BASM_2003_3_a1/}
}
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G. A. Moghani; A. R. Ashrafi. On some Hypergroups and their Hyperlattice Structures. Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 3 (2003), pp. 15-24. http://geodesic.mathdoc.fr/item/BASM_2003_3_a1/