The Lattice of Subquasivarieties of a Locally Finite Quasivariety (E-Book, PDF)

This book discusses the ways in which the algebras in a locally finite quasivariety determine its lattice of subquasivarieties.&nbsp; The book starts with a clear and comprehensive presentation of the basic structure theory of quasivariety lattices, and then develops new methods and algorithms for their analysis.&nbsp;Particular attention is paid to the role of quasicritical algebras.&nbsp; The methods are illustrated by applying them to quasivarieties of abelian groups, modular lattices, unary algebras and pure relational structures.&nbsp; An appendix gives an overview of the theory of quasivarieties.&nbsp; Extensive references to the literature are provided throughout.<p></p>