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Generalized cardinal properties of lattices and lattice ordered groups

Ján Jakubík (2004)

Czechoslovak Mathematical Journal

We denote by K the class of all cardinals; put K ' = K { } . Let 𝒞 be a class of algebraic systems. A generalized cardinal property f on 𝒞 is defined to be a rule which assings to each A 𝒞 an element f A of K ' such that, whenever A 1 , A 2 𝒞 and A 1 A 2 , then f A 1 = f A 2 . In this paper we are interested mainly in the cases when (i) 𝒞 is the class of all bounded lattices B having more than one element, or (ii) 𝒞 is a class of lattice ordered groups.

Graph automorphisms and cells of lattices

Ján Jakubík (2003)

Czechoslovak Mathematical Journal

In this paper we apply the notion of cell of a lattice for dealing with graph automorphisms of lattices (in connection with a problem proposed by G. Birkhoff).

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