List questions from rational-numbers

Published on 31 Mar 2026 - 10:08

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There is no smallest rational number greater than 2

Published on 08 Nov 2015 - 3:15

694

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A group automorphism of real numbers that is not the identity

Published on 08 Nov 2015 - 4:41

37

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What is the value of $x$ in $(7+\sqrt{x}+\frac{1}{5-\sqrt{x}})$?

Published on 08 Nov 2015 - 6:09

40

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Smallest Rational Number Proof

Published on 09 Nov 2015 - 1:45

71

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Log laws proof using only rational exponents

Published on 09 Nov 2015 - 23:22

38

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$\mathbb{Q}$: Unique operation s.t. $1\star q=q$ and right distributivity hold?

Published on 10 Nov 2015 - 3:16

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Continuity question: Show that $f(x)=0, \forall x\in\mathbb{R}$.

Published on 03 Apr 2026 - 18:12

341

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Tautological line bundle over rational projective space

Published on 25 Mar 2026 - 19:14

260

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Is there a function, continuous on the irrationals, with rational values, nowhere locally constant?

Published on 01 Apr 2026 - 23:04

164

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Intersection of union of crazy intervals in $\mathbb{R}$

Published on 13 Nov 2015 - 19:52

107

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Examining the nature of mapping of $f(x) = \frac{x}{x^2 - 2}$.

Published on 15 Nov 2015 - 19:06

104

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In $Q[x]/(x^2-2)$ find inverses of $[3x-2]$

Published on 15 Nov 2015 - 20:52

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Interesting facts/ proofs about rational and irrational numbers

Published on 03 Apr 2026 - 18:12

93

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Finding Rational numbers

Published on 17 Nov 2015 - 0:15

List Question

How to find the closest bounded rational approximation to a rational number?

There is no smallest rational number greater than 2

A group automorphism of real numbers that is not the identity

What is the value of $x$ in $(7+\sqrt{x}+\frac{1}{5-\sqrt{x}})$?

Smallest Rational Number Proof

Log laws proof using only rational exponents

$\mathbb{Q}$: Unique operation s.t. $1\star q=q$ and right distributivity hold?

Continuity question: Show that $f(x)=0, \forall x\in\mathbb{R}$.

Tautological line bundle over rational projective space

Is there a function, continuous on the irrationals, with rational values, nowhere locally constant?

Intersection of union of crazy intervals in $\mathbb{R}$

Examining the nature of mapping of $f(x) = \frac{x}{x^2 - 2}$.

In $Q[x]/(x^2-2)$ find inverses of $[3x-2]$

Interesting facts/ proofs about rational and irrational numbers

Finding Rational numbers

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