×

On subquasivariety lattices of semi-primal varieties. (English) Zbl 0561.08004

It is well known that the subvariety lattice of a semi-primal variety is distributive. In the present note the author constructs a sequence \(\{A_ n\}\) of semi-primal algebras with the following property: Let \(Q(A_ n)\) be the subquasivariety lattice of the variety generated by \(A_ n\). It is shown there is no non-trivial lattice identity which holds in all of the \(Q(A_ n)\), and hence there is no non-trivial lattice identity which holds in all subquasivariety lattices of semi- primal algebras.
Reviewer: A.F.Pixley

MSC:

08C15 Quasivarieties
08B15 Lattices of varieties
08A40 Operations and polynomials in algebraic structures, primal algebras
Full Text: DOI

References:

[1] W.Dziobiak,On distributivity of the lattice of subquasivarieties of a locally finite semi-simple arithmetical variety, to appear in Algebra Universalis. · Zbl 0548.08005
[2] R. Freese andJ. B. Nation,Congruence lattices of semilattices, Pacific Journal of Mathematics49 (1973), 51-58. · Zbl 0287.06002
[3] R. McNaughton,A theorem about infinite-valued sentential logic, Journal of Symbolic Logic16 (1951), 1-13. · Zbl 0043.00901 · doi:10.2307/2268660
This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. This attempts to reflect the references listed in the original paper as accurately as possible without claiming completeness or a perfect matching.