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Forcing with perfect closed sets. (English) Zbl 0226.02047
Axiomatic Set Theory, Proc. Sympos. Pure Math. 13, Part I, 331-355 (1971).

03E40 Other aspects of forcing and Boolean-valued models
03E45 Inner models, including constructibility, ordinal definability, and core models
03D30 Other degrees and reducibilities in computability and recursion theory