Geodesic
Injective Hulls of Semilattices
Canadian mathematical bulletin, Tome 13 (1970) no. 1, pp. 115-118

Voir la notice de l'article provenant de la source Cambridge University Press

A (meet-) semilattice is an algebra with one binary operation ∧, which is associative, commutative and idempotent. Throughout this paper we are working in the category of semilattices. All categorical or general algebraic notions are to be understood in this category. In every semilattice S the relation defines a partial ordering of S. The symbol "∨" denotes least upper bounds under this partial ordering. If it is not clear from the context in which partially ordered set a least upper bound is taken, we add this set as an index to the symbol; for example, ∨AX denotes the least upper bound of X in the partially ordered set A. 
Bruns, G.; Lakser, H. Injective Hulls of Semilattices. Canadian mathematical bulletin, Tome 13 (1970) no. 1, pp. 115-118. doi: 10.4153/CMB-1970-023-6
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