List questions from alternative-proof

Published on 28 Mar 2026 - 6:09

128

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Any $\varepsilon$-$\delta$ proof of this limit statement using only the trigonometric or circular definition of the sine function?

Published on 14 Feb 2017 - 21:05

109

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Maximum distance from top of a right angled isoscleses triangle to the nearest intouch points

Published on 29 Mar 2026 - 4:41

673

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Other Idea to show an inequality $\dfrac{1}{\sqrt 1}+\dfrac{1}{\sqrt 2}+\dfrac{1}{\sqrt 3}+\cdots+\dfrac{1}{\sqrt n}\geq \sqrt n$

Published on 29 Mar 2026 - 3:36

66

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a nbe b irrational numbers hnce a^b is rational

Published on 02 Apr 2026 - 0:13

17

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One equation of theorem $4.8$ of $I^K$-Cauchy Functions by Das,Sleziak,Toma seems faulty

Published on 14 Mar 2026 - 14:15

5.5k

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row rank= column rank, alternative proof

Published on 30 Mar 2026 - 9:45

257

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Elegant solution to $\lim\limits_{n \to \infty}{[n(\sqrt[n]{a} - 1)]}$

Published on 23 Feb 2017 - 0:59

1.1k

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Can you get a non-principal ultrafilter on N using Choice but 'avoiding' Zorn's Lemma?

Published on 01 Apr 2026 - 15:24

199

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graphing $y=\lim\limits_{n \to \infty}{\sqrt[n]{1+x^n}}$

Published on 23 Feb 2017 - 23:49

6.8k

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A proof of: The derivative of the determinant is the trace

Published on 23 Feb 2017 - 23:50

284

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alternative proof for countability of $n$ tuples of countable sets

Published on 24 Feb 2017 - 3:48

2.7k

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Inverse of a floor function

Published on 30 Mar 2026 - 12:13

487

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Artinian ring is Noetherian

Published on 25 Mar 2026 - 12:30

954

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Alternative proof of Schwarz's theorem using Fubini's theorem

Published on 24 Feb 2017 - 15:07

List Question

New, elegant proofs for $\varphi(p^{k})=p^{k}-p^{k-1}$

Any $\varepsilon$-$\delta$ proof of this limit statement using only the trigonometric or circular definition of the sine function?

Maximum distance from top of a right angled isoscleses triangle to the nearest intouch points

Other Idea to show an inequality $\dfrac{1}{\sqrt 1}+\dfrac{1}{\sqrt 2}+\dfrac{1}{\sqrt 3}+\cdots+\dfrac{1}{\sqrt n}\geq \sqrt n$

a nbe b irrational numbers hnce a^b is rational

One equation of theorem $4.8$ of $I^K$-Cauchy Functions by Das,Sleziak,Toma seems faulty

row rank= column rank, alternative proof

Elegant solution to $\lim\limits_{n \to \infty}{[n(\sqrt[n]{a} - 1)]}$

Can you get a non-principal ultrafilter on N using Choice but 'avoiding' Zorn's Lemma?

graphing $y=\lim\limits_{n \to \infty}{\sqrt[n]{1+x^n}}$

A proof of: The derivative of the determinant is the trace

alternative proof for countability of $n$ tuples of countable sets

Inverse of a floor function

Artinian ring is Noetherian

Alternative proof of Schwarz's theorem using Fubini's theorem

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