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wolfram alpha dedekind cut plot

Posted 9 years ago

Is it possible to make a plot of a cut of the rational line on wolfram alpha?

e.g. $A=\{x\in\mathbb{Q}:x\leq0\vee x^2<2\}$, $B=\{x\in \mathbb{Q}:x>0\wedge x^2\geq 2\}$

POSTED BY: Bill Morgan

Before attempting the cuts, how would you visualize the set of rationals itself, in such a way that you distinguish it from the set of reals? It is an interesting problem.

POSTED BY: Gianluca Gorni
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