Quasivarieties of pseudocomplemented semilattices
Tom 146 / 1995
Fundamenta Mathematicae 146 (1995), 295-312
DOI: 10.4064/fm-146-3-295-312
Streszczenie
Two properties of the lattice of quasivarieties of pseudocomplemented semilattices are established, namely, in the quasivariety generated by the 3-element chain, there is a sublattice freely generated by ω elements and there are $2^ω$ quasivarieties.
