List questions from alternative-proof

Published on 19 Nov 2013 - 16:41

350

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Proof for the distributivity of multiplication over addition for a Binary Field

Published on 20 Nov 2013 - 9:08

1.1k

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How we got $z\cdot(x+y)=x\cdot y$

Published on 28 Nov 2013 - 14:00

3.2k

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Integrating Dirichlet's Kernel

Published on 11 Apr 2026 - 12:45

86

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Integration involving non-elementary functions

Published on 04 Dec 2013 - 14:14

329

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Proof Without Words for $GCD(a,b) \cdot LCM(a,b)=ab$

Published on 10 Apr 2026 - 19:02

74

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A nice group isomorphism

Published on 11 Apr 2026 - 6:20

510

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Is there a proof of the irrationality of $\sqrt{2}$ that involves modular arithmetic?

Published on 08 Dec 2013 - 16:19

422

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Sum of squares of cotangents (Check properly of expression)

Published on 11 Apr 2026 - 14:59

2k

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Is there a simpler, more abstract proof of the Cayley-Hamilton theorem for matrices?

Published on 25 Mar 2026 - 16:08

16.6k

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Prove $1 + \tan^2\theta = \sec^2\theta$

Published on 15 Dec 2013 - 1:22

24.4k

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Prove $1 + \cot^2\theta = \csc^2\theta$

Published on 16 Dec 2013 - 8:24

107

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Simple proof of some formula for n!

Published on 11 Apr 2026 - 12:58

87

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An identity involving partial derivatives

Published on 09 Apr 2026 - 6:24

151

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Simple method for $\frac{(2n+1)!}{(n!)^{2}}$ divide $lcm(1,2,\ldots,2n+1)$

Published on 07 Apr 2026 - 5:20

List Question

B suggests A iff B Complement Doesn't Suggest A [DBertsekas P58 1.25(b)]

Proof for the distributivity of multiplication over addition for a Binary Field

How we got $z\cdot(x+y)=x\cdot y$

Integrating Dirichlet's Kernel

Integration involving non-elementary functions

Proof Without Words for $GCD(a,b) \cdot LCM(a,b)=ab$

A nice group isomorphism

Is there a proof of the irrationality of $\sqrt{2}$ that involves modular arithmetic?

Sum of squares of cotangents (Check properly of expression)

Is there a simpler, more abstract proof of the Cayley-Hamilton theorem for matrices?

Prove $1 + \tan^2\theta = \sec^2\theta$

Prove $1 + \cot^2\theta = \csc^2\theta$

Simple proof of some formula for n!

An identity involving partial derivatives

Simple method for $\frac{(2n+1)!}{(n!)^{2}}$ divide $lcm(1,2,\ldots,2n+1)$

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