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On the axiom of extensionality. I. (English) Zbl 0073.00801


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[1] A formal theorem in Church’s theory of types 7 pp 28– (1942) · Zbl 0063.05941
[2] DOI: 10.1073/pnas.24.12.556 · Zbl 0020.29701 · doi:10.1073/pnas.24.12.556
[3] The consistency of the axiom of reducibility 16 pp 35– (1951)
[4] A formulation of the simple theory of types 5 pp 56– (1940)
[5] On the independence of the axioms of definiieness 4 pp 69– (1939)
[6] Mathematische Annalen 102 pp 1– (1929)
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