Measure theory and weak König's lemma
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Tài liệu tham khảo
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Rudin, W.: Real and complex analysis. New York: McGraw-Hill 1966
Simpson, S.G.: Subsystems of Second Order Arithmetic. (in preparation)
Simpson, S.G.: Subsystems of Z2 and reverse mathematics, appendix to Proof theory, second edition, by G. Takeuti. Amsterdam: North-Holland, 1986, pp. 434–448
Simpson, S.G.: Which set existence axioms are needed to prove the Cauchy/Peano theorem for ordinary differential equations? J. Symb. Logic49, 783–802 (1984)
Yu, X.: Measure theory in weak subsystems of second order arithmetic. Ph.D. Thesis, The Pennsylvania State University, 1987