1,2

R. Bayon and N. Lygeros, Les hypergroupes et Hv-groupes d'ordre 3, submitted to Bulletin of the Greek Mathematical Society.

Th. Vougiouklis, The fundamental relation in hyperrings: The general hyperfield, Fourth Int. Congress Algebraic Hyperstructures and Appl. (AHA), 1991, pp. 203-211.

N. Lygeros, Home Page

Adjacent sequences: A108086 A108087 A108088 this_sequence A108090 A108091 A108092

Sequence in context: A061888 A117803 A121787 this_sequence A125543 A109893 A125544

hard,nonn

Roman Bayon (roman.bayon(AT)wanadoo.fr), Jun 05 2005