Skip to main content
3 events
when toggle format what by license comment
Mar 8, 2021 at 12:54 comment added dragoon The part before the cases can be improved: first, you can actually get that $-2p<x^2-2y^2<p$ by doing cases on whether $x^2\geq 2y^2$ or $x^2<2y^2$. So you get $x^2-2y^2\in\{-p,0\}$. This means that you only need to check cases 1 and 3.
Jun 22, 2016 at 13:56 history edited Emil Jeřábek CC BY-SA 3.0
fix TeX abuse, and remove an irrelevant point
Feb 19, 2015 at 12:11 history answered Pablo CC BY-SA 3.0