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対偶論法 (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "対偶論法" in Japanese language version.

refsWebsite
Global rank Japanese rank
1regentsprep.org
low place
low place
1csufresno.edu
low place
low place
1unsw.edu.au
4,584th place
low place

csufresno.edu

zimmer.csufresno.edu

  • Larry W. Cusick. “Proofs by Contrapositive”. zimmer.csufresno.edu. How To Write Proofs. California State University, Fresno. 2014年3月6日閲覧。

regentsprep.org

  • “Contrapositive”. Regents Exam Prep. Logic. Donna Roberts. 2012年9月9日時点のオリジナルよりアーカイブ。2010年12月5日閲覧。

unsw.edu.au

maths.unsw.edu.au

  • Franklin, J.; A. Daoud (2011). Proof in Mathematics: An Introduction. Sydney: Kew Books. ISBN 0-646-54509-4. http://www.maths.unsw.edu.au/~jim/proofs.html  (p. 50).