List questions from alternative-proof

Published on 14 Apr 2026 - 12:23

247

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How to show that $\prod_{p\text{ prime}} \frac{p}{p-1}$ diverges

Published on 13 Apr 2026 - 14:04

418

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On the Continuity of Sobolev Functions

Published on 14 Apr 2026 - 4:18

100

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Given a group of order $pq$ with $p < q$ primes, the index of the commutator subgroup is a multiple of $p$.

Published on 16 Apr 2026 - 8:52

184

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Synthetic proof that, given points $A,B,C,D$ in space, $\angle BAC \leq \angle BAD+\angle DAC$?

Published on 15 Apr 2026 - 7:50

311

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How can I prove $a^2 +b^2 >2ab$ only with Natural numbers?

Published on 11 Apr 2026 - 8:59

437

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Proving Homeomorphisms between Topological Spaces without finding explicit functions

Published on 11 Apr 2026 - 9:18

327

Views

Confusion with showing that $HN/N \cong H/(H \cap N)$

Published on 10 Apr 2026 - 20:51

99

Views

Alternative method to showing that $\sum_{r=-\infty}^{\infty}\frac{1}{64r^4+1}=\frac{\pi}{4}\frac{1+\sinh(\pi/2)}{\cosh(\pi/2)}$

Published on 15 Apr 2026 - 22:00

149

Views

How to complete this alternative proof for the FTFGAG

Published on 10 Apr 2026 - 20:54

123

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Harder proof using tools from Category Theory rather than Set Theory

Published on 15 Apr 2026 - 6:48

63

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Solving recurrence using Integrals and Mellin transforms

Published on 12 Apr 2026 - 22:07

77

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Another Proof for Center of Non-Abelian Group of Order $pq$ is $\{e\}$

Published on 14 Apr 2026 - 14:27

404

Views

An Old Number theory IMO question

Published on 11 Apr 2026 - 9:30

219

Views

Prove midpoint sequence converges to endpoint

Published on 13 Apr 2026 - 22:19

List Question

Collecting proofs $SO(3)\cong\Bbb R P^3$

How to show that $\prod_{p\text{ prime}} \frac{p}{p-1}$ diverges

On the Continuity of Sobolev Functions

Given a group of order $pq$ with $p < q$ primes, the index of the commutator subgroup is a multiple of $p$.

Synthetic proof that, given points $A,B,C,D$ in space, $\angle BAC \leq \angle BAD+\angle DAC$?

How can I prove $a^2 +b^2 >2ab$ only with Natural numbers?

Proving Homeomorphisms between Topological Spaces without finding explicit functions

Confusion with showing that $HN/N \cong H/(H \cap N)$

Alternative method to showing that $\sum_{r=-\infty}^{\infty}\frac{1}{64r^4+1}=\frac{\pi}{4}\frac{1+\sinh(\pi/2)}{\cosh(\pi/2)}$

How to complete this alternative proof for the FTFGAG

Harder proof using tools from Category Theory rather than Set Theory

Solving recurrence using Integrals and Mellin transforms

Another Proof for Center of Non-Abelian Group of Order $pq$ is $\{e\}$

An Old Number theory IMO question

Prove midpoint sequence converges to endpoint

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