aphasia 发表于 2025-3-28 17:32:38
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Incomparability,(Note that when we say that . is a tree included in ., we mean merely that . is a subset of . which is a tree under the induced ordering; there is no assumption that incomparable elements (in . ) are disjoint (in the dual of .).) ..TOM 发表于 2025-3-29 08:59:18
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0743-1643 1 cardinal number valued functions defined for any Boolean a.This book is concerned with cardinal number valued functions defined for any Boolean algebra. Examples of such functions are independence, which assigns to each Boolean algebra the supremum of the cardinalities of its free subalgebras, andShuttle 发表于 2025-3-29 18:28:30
Book 2014Latest editiongns to each Boolean algebra the supremum of the cardinalities of its free subalgebras, and cellularity, which gives the supremum of cardinalities of sets of pairwise disjoint elements. Twenty-one such functions are studied in detail, and many more in passing. The questions considered are the behaviozonules 发表于 2025-3-29 22:31:11
Introduction,.(.) of cardinal numbers. The purpose of the book is to survey this area of the theory of BAs, giving proofs for a large number of results, some of which are new, mentioning most of the known results, and formulating open problems.Chronic 发表于 2025-3-30 00:04:16
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