By J. Donald Monk
This publication is anxious with cardinal quantity valued services outlined for any Boolean algebra. Examples of such features are independence, which assigns to every Boolean algebra the supremum of the cardinalities of its loose subalgebras, and cellularity, which provides the supremum of cardinalities of units of pairwise disjoint components. Twenty-one such services are studied intimately, and plenty of extra in passing. The questions thought of are the behaviour of those services less than algebraic operations reminiscent of items, unfastened items, ultraproducts, and their relationships to 1 another.
Assuming familiarity with purely the fundamentals of Boolean algebras and set concept, via basic endless combinatorics and forcing, the publication stories present wisdom approximately those services, giving entire proofs for many proof. a unique characteristic of the publication is the eye given to open difficulties, of which 185 are formulated.
Based on Cardinal services on Boolean Algebras (1990) and Cardinal Invariants on Boolean Algebras (1996) through an identical writer, the current paintings is far better than both of those. It comprises suggestions to a number of the open difficulties of the sooner volumes. one of the new issues are continuum cardinals on Boolean algebras, with a long therapy of the reaping quantity. Diagrams on the finish of the ebook summarize the relationships among the features for lots of vital periods of Boolean algebras, together with period algebras, tree algebras and superatomic algebras.