List questions from alternative-proof

Published on 10 Jun 2017 - 5:39

358

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Requesting Explanation of Picture Proof : Union Distributes over Intersection

Published on 14 Jun 2017 - 17:22

587

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Alternate proof of $a^\alpha b^\beta \leq \alpha a + \beta b$ where $\alpha + \beta = 1$

Published on 15 Jun 2017 - 12:07

3.2k

Views

Dog and Goose Circular Pursuit Problem

Published on 16 Jun 2017 - 21:24

678

Views

An elegant proof that the pairity of a permutation is well-defined

Published on 11 Apr 2026 - 9:29

468

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Set of all sets those are equipotent to a given set?

Published on 21 Jun 2017 - 4:19

525

Views

Presheaf category is locally finitely presentable

Published on 07 Apr 2026 - 13:03

31

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Question regarding a proof for a subspace problem in Lang

Published on 11 Apr 2026 - 13:16

2.8k

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Prove that $f$ continuous if and only if $f([a,b])=[c,d]$ for $f:[a,b]\rightarrow \mathbb{R}$ strictly increasing and $a,b,c,d \in \mathbb{R}$

Published on 24 Jun 2017 - 12:18

176

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Continuity with the Riemann-Stieltjes integral

Published on 28 Mar 2026 - 14:55

307

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Lebesgue outer measure of irrationals by definition

Published on 06 Apr 2026 - 7:45

2.9k

Views

Proof on Laplace transform integral

Published on 10 Apr 2026 - 17:04

1.5k

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Show that if $xu - yv = 1$ and $xv + yu = 0$ then $u$ and $v$ have unique solutions iff $x^2 + y^2 \neq 0$.

Published on 28 Jun 2017 - 1:05

246

Views

Alternative proof for Riemann integration Theorem

Published on 10 Apr 2026 - 19:07

822

Views

Find the Roots of $(x+1)(x+3)(x+5)(x+7) + 15 = 0$

Published on 03 Jul 2017 - 23:12

List Question

Find the closed form of $\sum_{k=1}^{n-1} k a^k $

Requesting Explanation of Picture Proof : Union Distributes over Intersection

Alternate proof of $a^\alpha b^\beta \leq \alpha a + \beta b$ where $\alpha + \beta = 1$

Dog and Goose Circular Pursuit Problem

An elegant proof that the pairity of a permutation is well-defined

Set of all sets those are equipotent to a given set?

Presheaf category is locally finitely presentable

Question regarding a proof for a subspace problem in Lang

Prove that $f$ continuous if and only if $f([a,b])=[c,d]$ for $f:[a,b]\rightarrow \mathbb{R}$ strictly increasing and $a,b,c,d \in \mathbb{R}$

Continuity with the Riemann-Stieltjes integral

Lebesgue outer measure of irrationals by definition

Proof on Laplace transform integral

Show that if $xu - yv = 1$ and $xv + yu = 0$ then $u$ and $v$ have unique solutions iff $x^2 + y^2 \neq 0$.

Alternative proof for Riemann integration Theorem

Find the Roots of $(x+1)(x+3)(x+5)(x+7) + 15 = 0$

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