2012 will be, in several countries, a presidential election year. Some decades ago, candidates were not always supposed to spend months on some demagogicdemocratic debates, but had time to spend on more important problems. Like mathematics… For instance, a congressman, who became the 20th president of the United States, James Garfield, gave the following proof to the Pythagorean theorem (actually, he wrote that proof five years before he become President). The legend claims that he found this proof in 1876 during a mathematics discussion with some of the members of Congress… Those were good old days, when politicians were interested in mathematics, and sciences. The proof he suggested was the following
i.e. , since
I found that nice graph in Roger Nelsen’s book. For more details, Klebe (1995), or on wikipedia. And for those who love proofs without words, look at the 96 geometrical proofs of the Pythagorean theorem mentioned on http://www.cut-the-knot.org/.
OpenEdition suggests that you cite this post as follows:
Arthur Charpentier (February 4, 2012). Good old days, politics and mathematics. Freakonometrics. Retrieved February 15, 2025 from https://doi.org/10.58079/ouk7
Damned, moi qui pensait avoir fait une blague originale le 1er avril dernier
http://freakonometrics.blog.free.fr…
je me rends compte qu’en 1897 ce n’était pas une blague ! merci pour le lien…. j’adore cette histoire, cf aussi
http://www.agecon.purdue.edu/crd/Lo…
Ça m’a fait pensé à cette histoire:
http://en.wikipedia.org/wiki/Indian…
by that time, you could say so
very nice (the proof)
sad but true (your statement)