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Jun 16, 2019 at 3:03 history edited KConrad CC BY-SA 4.0
put equations in math mode
Oct 16, 2013 at 23:08 comment added Mariano Suárez-Álvarez Rereading this after three years is no less a pleasure than it was originally.
Oct 18, 2010 at 12:12 comment added KConrad Several elementary problems leading to Pell's equation are in Barbeau's incredibly well-titled book "Pell's equation". The problems lead to a Pell-like equation x^2 - dy^2 = n where d is a small number, usually 2 or 3.
Oct 18, 2010 at 12:05 history edited KConrad CC BY-SA 2.5
added 1 characters in body
Oct 18, 2010 at 10:43 comment added Chandan Singh Dalawat The Pell's equation approach to Archimedes' cattle problem is discussed by Lenstra in the Notices fo the AMS (ams.org/notices/200202/fea-lenstra.pdf).
Oct 18, 2010 at 9:18 history answered KConrad CC BY-SA 2.5