List questions from alternative-proof

Published on 31 Mar 2026 - 5:37

392

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Show that a piecewise function of two solutions to an ODE is a solution to the ODE

Published on 27 Jan 2016 - 11:08

115

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Simple Inequality of Complex Numbers, $\left| \frac{a-b}{1-\overline{a}b} \right| <1$

Published on 28 Jan 2016 - 19:12

161

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If $ f \rightarrow c$ then prove $\frac{1}{a} \int_{[0,a]} f \rightarrow c$

Published on 29 Jan 2016 - 8:00

316

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Proving that product of transpose matrix and the matrix is inversible

Published on 29 Jan 2016 - 11:01

55

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Is there any way to gain some insight into a proof by simply looking at a graphic?

Published on 30 Jan 2016 - 22:28

52

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Alternative proof of $\prod_{n=1}^{+\infty}\frac{e^{it/2^n}+1}{2}=\frac{e^{it}-1}{it}$

Published on 31 Mar 2026 - 17:53

348

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Looking for a non-combinatorial proof that $a! \cdot b! \mid (a+b)!$

Published on 04 Apr 2026 - 13:38

3.7k

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Show that $6^n/n! \le 6^5/5! \times 6/n$

Published on 02 Feb 2016 - 11:40

382

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$\mathbb CP^1 \approx S^2$ proof check

Published on 02 Feb 2016 - 12:52

532

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How to prove these two sets are identical?

Published on 04 Apr 2026 - 7:58

56

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Decreasing sequence and prove by contradiction

Published on 04 Feb 2016 - 1:38

426

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Solving the recurrence $A_n = \sum_{k=1}^{n} 2^{k+1} A_{n-k}$

Published on 04 Feb 2016 - 9:37

601

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Help Proving the Average is greater than B^(1/n)

Published on 05 Feb 2016 - 17:35

639

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Proof that $\frac{2}{3} < \log(2) < \frac{7}{10}$

Published on 30 Mar 2026 - 10:40

List Question

Show code $C$ is a 1 error correcting

Show that a piecewise function of two solutions to an ODE is a solution to the ODE

Simple Inequality of Complex Numbers, $\left| \frac{a-b}{1-\overline{a}b} \right| <1$

If $ f \rightarrow c$ then prove $\frac{1}{a} \int_{[0,a]} f \rightarrow c$

Proving that product of transpose matrix and the matrix is inversible

Is there any way to gain some insight into a proof by simply looking at a graphic?

Alternative proof of $\prod_{n=1}^{+\infty}\frac{e^{it/2^n}+1}{2}=\frac{e^{it}-1}{it}$

Looking for a non-combinatorial proof that $a! \cdot b! \mid (a+b)!$

Show that $6^n/n! \le 6^5/5! \times 6/n$

$\mathbb CP^1 \approx S^2$ proof check

How to prove these two sets are identical?

Decreasing sequence and prove by contradiction

Solving the recurrence $A_n = \sum_{k=1}^{n} 2^{k+1} A_{n-k}$

Help Proving the Average is greater than B^(1/n)

Proof that $\frac{2}{3} < \log(2) < \frac{7}{10}$

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