Question

The proof that $\sqrt{q}$ is a rational number iff $q$ is a perfect square

score 160 · Answer 1 · 2019-02-17 18:33:20

160

Views

The proof that $\sqrt{q}$ is a rational number iff $q$ is a perfect square

Published on 17 Feb 2019 - 18:33

score 49 · Answer 2 · 2019-02-17 23:08:32

49

Views

Conditions for simplified rational expressions

Published on 17 Feb 2019 - 23:08

score 929 · Answer 3 · 2026-03-25 06:05:47

929

Views

Rational with finite decimals values for sine, cosine, and tangent

Published on 25 Mar 2026 - 6:05

score 70 · Answer 4 · 2019-02-20 08:12:37

70

Views

Does the Pythagorean formula $a^2+b^2=c^2$ hold in the plane $\mathbb{Q} \times \mathbb{Q}$?

Published on 20 Feb 2019 - 8:12

score 228 · Answer 5 · 2019-02-21 14:58:05

228

Views

Finding a rational root on this particular two variables polynomial

Published on 21 Feb 2019 - 14:58

score 593 · Answer 6 · 2019-02-21 17:19:53

593

Views

Is there such an $x$ that both $2^{\frac{x}{3}}$ and $3^{\frac{x}{2}}$ are simultaneously rational?

Published on 21 Feb 2019 - 17:19

score 39 · Answer 7 · 2019-02-22 03:37:41

39

Views

True or False: If $x\notin \mathbb{Q}$ then $\sum_{m\geq 0} mx^{m-1}\notin \mathbb{Q}$

Published on 22 Feb 2019 - 3:37

score 621 · Answer 8 · 2019-02-25 13:33:50

621

Views

Definition of the supremum in $\mathbb{Q}$

Published on 25 Feb 2019 - 13:33

score 25 · Answer 9 · 2026-03-27 10:07:28

25

Views

Difference between rationals in a certain set is at least a certain amount

Published on 27 Mar 2026 - 10:07

score 329 · Answer 10 · 2019-02-27 10:24:31

329

Views

Countability of Sets with rational and real numbers

Published on 27 Feb 2019 - 10:24

score 83 · Answer 11 · 2019-02-28 09:05:32

83

Views

Density of $\mathbb{Q}$ in $\mathbb{R}$

Published on 28 Feb 2019 - 9:05

score 67 · Answer 12 · 2026-03-26 17:31:27

67

Views

Two different rational numbers to the power irrational both rational

Published on 26 Mar 2026 - 17:31

score 204 · Answer 13 · 2019-03-05 11:39:12

204

Views

Is the additive group of integers a rational group?

Published on 05 Mar 2019 - 11:39

score 432 · Answer 14 · 2026-03-28 08:17:08

432

Views

Does there exist a generating function for the rational numbers?

Published on 28 Mar 2026 - 8:17

score 1.5k · Answer 15 · 2026-03-25 04:53:19

1.5k

Views

Proving piecewise function is not continuous

Published on 25 Mar 2026 - 4:53

List Question

The proof that $\sqrt{q}$ is a rational number iff $q$ is a perfect square

Conditions for simplified rational expressions

Rational with finite decimals values for sine, cosine, and tangent

Does the Pythagorean formula $a^2+b^2=c^2$ hold in the plane $\mathbb{Q} \times \mathbb{Q}$?

Finding a rational root on this particular two variables polynomial

Is there such an $x$ that both $2^{\frac{x}{3}}$ and $3^{\frac{x}{2}}$ are simultaneously rational?

True or False: If $x\notin \mathbb{Q}$ then $\sum_{m\geq 0} mx^{m-1}\notin \mathbb{Q}$

Definition of the supremum in $\mathbb{Q}$

Difference between rationals in a certain set is at least a certain amount

Countability of Sets with rational and real numbers

Density of $\mathbb{Q}$ in $\mathbb{R}$

Two different rational numbers to the power irrational both rational

Is the additive group of integers a rational group?

Does there exist a generating function for the rational numbers?

Proving piecewise function is not continuous

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