Pacific Journal of Mathematics · 1970 · 83 citations · 32 references
Natural SciencesMathematicsNumber TheorySet TheoryAxiomatic Set TheoryCombinatorial Set TheoryPerfect Set PropertyPerfect SetsReal NumbersSubset Axiom
There has been some interest in trying to see which sets of real numbers contain perfect subsets. In this paper we prove a theorem which might be able to solve this problem in some generality.
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Arithmetical predicates and function quantifiers
S. C. Kleene · Transactions of the American Mathematical Society · 1955 · 166 citations · Full text
Humanities, Mathematics, Logic +5
Almost smooth perturbations of self-adjoint operators
John B. Butler · Pacific Journal of Mathematics · 1970 · 58 citations · Full text