List questions from proof-verification

Published on 22 Mar 2026 - 12:46

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Inequality problem with negative values

Published on 25 Mar 2026 - 23:16

71

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Find all the functions $f : \Bbb Z \rightarrow \Bbb Z$ such that $f(x+f(f(y)))=y+f(f(x))$ for all integers $(x,y)$

Published on 24 Mar 2026 - 23:51

45

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Does the ordinary differential equation exist?

Published on 25 Mar 2026 - 14:10

46

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How to prove this probability equation?

Published on 09 Feb 2018 - 21:04

145

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Proving the convergence of $\bigg (\sum_{n}^{\nu} \bigg( \sum_{n}^{\chi} |\log(p_{n})+\log(q_{n})| \bigg ) \bigg )$?

Published on 26 Mar 2026 - 6:22

79

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Deriving Variance for a General Poisson Random Variable

Published on 10 Feb 2018 - 0:33

224

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What is wrong with this proof? Claim: $\ln(2)$ is rational.

Published on 25 Mar 2026 - 11:10

1k

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Radon-Nikodym derivative of discrete measure

Published on 22 Mar 2026 - 19:37

6.7k

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HCF and LCM of two numbers are same. Find the difference between the two numbers.

Published on 25 Mar 2026 - 14:12

1k

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VERIFICAATION: Find the 9th term from the end of the AP 5, 9, 13,...., 185.

Published on 10 Feb 2018 - 11:47

108

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Please double-check my deduced equation

Published on 17 Mar 2026 - 14:26

71

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what is the limit of $\frac1{n+1}$ as $n\to\infty$?

Published on 25 Mar 2026 - 14:16

221

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Verifying if subset are subspaces

Published on 10 Feb 2018 - 16:26

366

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Every point of a nonempty open set $S$ belongs to one and only one component interval of $S$

Published on 10 Feb 2018 - 18:18

List Question

Is this proof valid - Holder's inequality

Inequality problem with negative values

Find all the functions $f : \Bbb Z \rightarrow \Bbb Z$ such that $f(x+f(f(y)))=y+f(f(x))$ for all integers $(x,y)$

Does the ordinary differential equation exist?

How to prove this probability equation?

Proving the convergence of $\bigg (\sum_{n}^{\nu} \bigg( \sum_{n}^{\chi} |\log(p_{n})+\log(q_{n})| \bigg ) \bigg )$?

Deriving Variance for a General Poisson Random Variable

What is wrong with this proof? Claim: $\ln(2)$ is rational.

Radon-Nikodym derivative of discrete measure

HCF and LCM of two numbers are same. Find the difference between the two numbers.

VERIFICAATION: Find the 9th term from the end of the AP 5, 9, 13,...., 185.

Please double-check my deduced equation

what is the limit of $\frac1{n+1}$ as $n\to\infty$?

Verifying if subset are subspaces

Every point of a nonempty open set $S$ belongs to one and only one component interval of $S$

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