Proof by contradiction (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Proof by contradiction" in English language version.

refsWebsite

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4doi.org

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2clarku.edu

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2web.archive.org

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1edc.org

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1britannica.com

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1ncatlab.org

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1vcu.edu

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1andrej.com

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1stanford.edu

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1uni-goettingen.de

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1utah.edu

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1mathforum.org

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1ctan.org

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1ualberta.ca

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andrej.com

math.andrej.com

Bauer, Andrej (29 March 2010). "Proof of negation and proof by contradiction". Mathematics and Computation. Retrieved 26 October 2021.

britannica.com

"Reductio ad absurdum | logic". Encyclopedia Britannica. Retrieved 25 October 2019.

clarku.edu

mathcs.clarku.edu

"Euclid's Elements, Book 6, Proposition 1". Retrieved 2 October 2022.
"Euclid's Elements, Book 9, Proposition 20". Retrieved 2 October 2022.

ctan.org

The Comprehensive LaTeX Symbol List, pg. 20. http://www.ctan.org/tex-archive/info/symbols/comprehensive/symbols-a4.pdf

doi.org

Hilbert, David (1893). "Ueber die vollen Invariantensysteme". Mathematische Annalen. 42 (3): 313–373. doi:10.1007/BF01444162.
Bauer, Andrej (2017). "Five stages of accepting constructive mathematics". Bulletin of the American Mathematical Society. 54 (3): 481–498. doi:10.1090/bull/1556.
"Linear Resolution", From Logic to Logic Programming, The MIT Press, pp. 93–120, 1994, doi:10.7551/mitpress/3133.003.0007, ISBN 978-0-262-28847-7, retrieved 21 December 2023

dx.doi.org

"Linear Resolution", From Logic to Logic Programming, The MIT Press, pp. 93–120, 1994, doi:10.7551/mitpress/3133.003.0007, ISBN 978-0-262-28847-7, retrieved 21 December 2023

edc.org

www2.edc.org

"Proof By Contradiction". www2.edc.org. Retrieved 12 June 2023.

mathforum.org

"Math Forum Discussions".

ncatlab.org

"Proof by contradiction". nLab. Retrieved 7 October 2022.

stanford.edu

plato.stanford.edu

Moschovakis, Joan (2024), Zalta, Edward N.; Nodelman, Uri (eds.), "Intuitionistic Logic", The Stanford Encyclopedia of Philosophy (Summer 2024 ed.), Metaphysics Research Lab, Stanford University, retrieved 5 April 2025

ualberta.ca

math.ualberta.ca

G. H. Hardy, A Mathematician's Apology; Cambridge University Press, 1992. ISBN 9780521427067. PDF p.19 Archived 2021-02-16 at the Wayback Machine.

uni-goettingen.de

resolver.sub.uni-goettingen.de

Hilbert, David (1893). "Ueber die vollen Invariantensysteme". Mathematische Annalen. 42 (3): 313–373. doi:10.1007/BF01444162.

utah.edu

math.utah.edu

Alfeld, Peter (16 August 1996). "Why is the square root of 2 irrational?". Understanding Mathematics, a study guide. Department of Mathematics, University of Utah. Retrieved 6 February 2013.

vcu.edu

people.vcu.edu

Richard Hammack, Book of Proof, 3rd edition, 2022, ISBN 978-0-9894721-2-8; see "Chapter 9: Disproof".

web.archive.org

Gary Hardegree, Introduction to Modal Logic, Chapter 2, pg. II–2. https://web.archive.org/web/20110607061046/http://people.umass.edu/gmhwww/511/pdf/c02.pdf
G. H. Hardy, A Mathematician's Apology; Cambridge University Press, 1992. ISBN 9780521427067. PDF p.19 Archived 2021-02-16 at the Wayback Machine.