List questions from irrational-numbers

Published on 29 Mar 2026 - 3:02

688

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Integer parts of multiples of irrationals

Published on 28 Mar 2026 - 11:33

593

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$\sqrt{2}\notin\mathbb{Q}$ but ...

Published on 13 Dec 2013 - 17:53

202

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Number made from ending digits of primes

Published on 17 Dec 2013 - 20:41

573

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Prove that this number is irrational

Published on 19 Dec 2013 - 4:37

153

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Irrational number?

Published on 19 Dec 2013 - 8:55

6.7k

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Proof that there are infinitely many irrational numbers!

Published on 25 Dec 2013 - 12:42

5k

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Direct proof: $\sqrt{13}$ is irrational

Published on 26 Dec 2013 - 11:14

536

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Is there an elementary proof that $\sum_{n=1}^\infty {1\over n^s\{n\pi\}}<\infty$ for some $s>0$?

Published on 05 Jan 2014 - 22:35

739

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Proof e is irrational — Choice of Sign of m/n = e and Uncanny Step

Published on 06 Jan 2014 - 7:30

468

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Polynomial in $\mathbb{Q}[x]$ with root $\sqrt[3]{2}+\sqrt[3]{3}$

Published on 17 Jan 2014 - 1:08

129

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$x^2-p=0$, with $p$ prime, have irrational roots.

Published on 17 Jan 2014 - 13:40

1.3k

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Predicting digits in $\pi$

Published on 02 Apr 2026 - 19:12

3.4k

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Teaching irrational numbers?

Published on 24 Feb 2026 - 12:32

47

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A question about limit and sequence

Published on 21 Jan 2014 - 20:51

List Question

Draw an irrational number on the number line (without pythagoras sentence)

Integer parts of multiples of irrationals

$\sqrt{2}\notin\mathbb{Q}$ but ...

Number made from ending digits of primes

Prove that this number is irrational

Irrational number?

Proof that there are infinitely many irrational numbers!

Direct proof: $\sqrt{13}$ is irrational

Is there an elementary proof that $\sum_{n=1}^\infty {1\over n^s\{n\pi\}}<\infty$ for some $s>0$?

Proof e is irrational — Choice of Sign of m/n = e and Uncanny Step

Polynomial in $\mathbb{Q}[x]$ with root $\sqrt[3]{2}+\sqrt[3]{3}$

$x^2-p=0$, with $p$ prime, have irrational roots.

Predicting digits in $\pi$

Teaching irrational numbers?

A question about limit and sequence

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