Recent content by rat bass

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    Existence of a Critical Point for Differentiable Functions on Closed Intervals

    I think it looks good.
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    Graduate Set of all rational sequences countable?

    ah nevermind I see it. Thank you I was wrong.
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    Graduate Set of all rational sequences countable?

    I know that Q (rational numbers) are countable and that the finite cartesian of Q with itself, Q^n is countable but is it true that the countably infinite cartesian product of Q with itself is countable? The set of all rational sequences are isomorphic to Q^∞ (here I am saying Q^∞ is the...