Papers from an October 1999 conference expand on the work of Andrßs Hajnal in combinatorial set theory, cardinal arithmetic, set theoretic topology, and finite and infinite combinatorics. Specific topics include Hajnal's contributions to combinatorial set theory and the partition calculus, multicolored graphs on countable ordinals of finite exponent, analytic Hausdorff gaps, Chang's conjecture and partition theory, and subgraph chromatic number. Other subjects are superatomic Boolean algebras, some applications of superrigidity to Borel equivalence relations, and localized reflection and fragments of PFA. There is no subject index. Annotation c. Book News, Inc., Portland, OR (booknews.com)
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