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Almost ff-universal and q-universal varieties of modular 0-lattices

V. Koubek, J. Sichler (2004)

Colloquium Mathematicae

A variety 𝕍 of algebras of a finite type is almost ff-universal if there is a finiteness-preserving faithful functor F: 𝔾 → 𝕍 from the category 𝔾 of all graphs and their compatible maps such that Fγ is nonconstant for every γ and every nonconstant homomorphism h: FG → FG' has the form h = Fγ for some γ: G → G'. A variety 𝕍 is Q-universal if its lattice of subquasivarieties has the lattice of subquasivarieties of any quasivariety of algebras of a finite type as the quotient of its sublattice....

A-Verbände I

M. Stern, A. KERTÉSZ (1971)

Beiträge zur Algebra und Geometrie = Contributions to algebra and geometry

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