List questions from proof-explanation

Published on 26 Mar 2026 - 19:09

196

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Why does $\left( dW_t \right)^3 = 0$, where $W_t$ denotes a standard Brownian motion process?

Published on 25 Mar 2026 - 20:42

86

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show that $\inf\{1-\|\frac 12(x+y)\|: x,y\in S_X,\|x-y\|=\epsilon\}=\inf\{1-\|\frac 12(x+y)\|: x,y\in B_X,\|x-y\|=\epsilon\}$

Published on 28 Mar 2026 - 0:30

454

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How do I use rule induction to prove this relation?

Published on 26 Mar 2026 - 18:58

265

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Upper Derivative and Increasing Function on a Compact Interval

Published on 19 Apr 2018 - 14:24

97

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How can I prove these quantifier problem? $\neg\forall x P(x) \iff \exists x \neg P(x)$

Published on 25 Mar 2026 - 0:07

41

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Confused by a proof from Solow book

Published on 19 Apr 2018 - 19:58

93

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proof explanation of $\sqrt{\frac{n}{n+1}}\notin \mathbb{Q}$

Published on 19 Apr 2018 - 20:08

97

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Proof of the Theorem of Grothendieck

Published on 19 Apr 2018 - 22:06

66

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On a question of projection in complex Hilbert space

Published on 25 Mar 2026 - 12:53

183

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Mistake in the proof of Theorem 2.24 of Quiver Representations by Ralf Schiffler?

Published on 22 Mar 2026 - 17:32

265

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Triangle Inequality Proof Review for $d(x, y) = |x^2 - y^2|$

Published on 20 Apr 2018 - 12:30

132

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Proof of polynomial division theorem

Published on 28 Mar 2026 - 6:17

28

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Explanation of a step in proof of Triangle Inequality for Contour Integrals

Published on 20 Apr 2018 - 21:30

119

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Proving irrationality of $\sqrt 3$

Published on 27 Mar 2026 - 14:28

List Question

Finding errors in a proof that $\langle x,a\rangle\to|a|^2$ as $x$ approaches $a$

Why does $\left( dW_t \right)^3 = 0$, where $W_t$ denotes a standard Brownian motion process?

show that $\inf\{1-\|\frac 12(x+y)\|: x,y\in S_X,\|x-y\|=\epsilon\}=\inf\{1-\|\frac 12(x+y)\|: x,y\in B_X,\|x-y\|=\epsilon\}$

How do I use rule induction to prove this relation?

Upper Derivative and Increasing Function on a Compact Interval

How can I prove these quantifier problem? $\neg\forall x P(x) \iff \exists x \neg P(x)$

Confused by a proof from Solow book

proof explanation of $\sqrt{\frac{n}{n+1}}\notin \mathbb{Q}$

Proof of the Theorem of Grothendieck

On a question of projection in complex Hilbert space

Mistake in the proof of Theorem 2.24 of Quiver Representations by Ralf Schiffler?

Triangle Inequality Proof Review for $d(x, y) = |x^2 - y^2|$

Proof of polynomial division theorem

Explanation of a step in proof of Triangle Inequality for Contour Integrals

Proving irrationality of $\sqrt 3$

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