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A proof of Axiom of Choice → Zorn's Lemma without transfinite induction (Nov. 13, 2011; Last update Dec. 10, 2011) DVI PDF DVI in Japanese PDF in Japanese
A note on Tychonoff's Theorem and Axiom of Choice (Jan. 22, 2012; Last update Jan. 6, 2013) DVI PDF DVI in Japanese PDF in Japanese
Note: The Outer Automorphism of S₆ (Apr. 13, 2015) DVI PDF DVI in Japanese PDF in Japanese

Koji NUIDA (nuida[Please insert at-mark here]mist.i.u-tokyo.ac.jp)
Last Modified: April 2, 2018
(Counted since Jan. 20, 2012)