Geodesic
On semilattices and lattices for families of theories
Sibirskie èlektronnye matematičeskie izvestiâ, Tome 14 (2017), pp. 980-985

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We define and study semilattices and lattices for $E$-closed families of theories. Properties of these semilattices and lattices are investigated. It is shown that lattices for families of theories with the least generating sets are distributive.
Keywords: $E$-operator, combination of theories, family of theories, least generating set, semilattice, lattice. 
S. V. Sudoplatov. On semilattices and lattices for families of theories. Sibirskie èlektronnye matematičeskie izvestiâ, Tome 14 (2017), pp. 980-985. http://geodesic.mathdoc.fr/item/SEMR_2017_14_a27/
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     title = {On semilattices and lattices for families of theories},
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