Two Motivated Concrete Proofs (much better than the usual one) that the Squre-Root of 2 is Irrational

Two Motivated Concrete Proofs (much better than the usual one) that the Square-Root of 2 is Irrational

By Doron Zeilberger
.pdf .ps .tex

Written: Oct. 7, 2014
[Exclusively published in the Personal Journal of Shalosh B. Ekhad and Doron Zeilberger and arxiv.org]

Dedicated to Zvi Artstein, the Poincaré of the early 21-st century

This short "education note" was inspired by Zvi Artstein's masterpiece Mathematics and the Real World, the Remarkable Role of Evolution in the Making of Mathematics (p. 53, and p. 400). See Dr. Z.'s 140th opinion
Personal Journal of Shalosh B. Ekhad and Doron Zeilberger
Doron Zeilberger's Home Page