List questions from proof-verification

Published on 16 Apr 2026 - 14:46

317

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Stokes' theorem proof (is it acceptable?)

Published on 13 Apr 2026 - 5:51

401

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How to prove that there exist exactly two non-similar isosceles triangles ABC such that tanA+tanB+tanC=100?

Published on 16 Apr 2026 - 9:43

86

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Proof that every real number has integer part

Published on 13 Apr 2026 - 21:00

369

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Prove that the following map is compact

Published on 14 Apr 2026 - 21:55

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Combinatorial proof (not by induction): $1 + 2 + 3 +...+ n = {n+1\choose 2}$

Published on 16 Apr 2026 - 10:59

76

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Is this a valid proof of the mean value theorem?

Published on 12 Apr 2026 - 3:03

95

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$R_{\mathfrak{p}}$ is integrally closed in its total quotient ring, then $R$ is integrally closed in its total quotient ring.

Published on 15 Apr 2026 - 10:38

53

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Proving a function from $\mathbb{N}\to A\cup \{x \}$ is a bijection.

Published on 14 Apr 2026 - 5:28

411

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Prove that if $a$ is an upper bound for $A$, and if $a$ is also element of $A$, then $a = \ sup A$

Published on 16 Apr 2026 - 3:40

35

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Checking Proof for the following Divisibility

Published on 16 Apr 2026 - 17:05

139

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Showing that $p$ is an odd prime $\iff$ $\forall a \in \Bbb N$ $gcd(a,p)=1$ or $gcd(a,p)=p$

Published on 15 Apr 2026 - 23:05

52

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Verification of proof of nonconvergence

Published on 10 Apr 2026 - 8:15

168

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Relatively Open Subset, Proof

Published on 17 Apr 2026 - 6:23

51

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Checking the proof for the following prime question.

Published on 13 Apr 2026 - 15:08

List Question

Conditional expectation $\operatorname E[\varepsilon_s\varepsilon_t\mid X_1,\ldots,X_{n-1}]$

Stokes' theorem proof (is it acceptable?)

How to prove that there exist exactly two non-similar isosceles triangles ABC such that tanA+tanB+tanC=100?

Proof that every real number has integer part

Prove that the following map is compact

Combinatorial proof (not by induction): $1 + 2 + 3 +...+ n = {n+1\choose 2}$

Is this a valid proof of the mean value theorem?

$R_{\mathfrak{p}}$ is integrally closed in its total quotient ring, then $R$ is integrally closed in its total quotient ring.

Proving a function from $\mathbb{N}\to A\cup \{x \}$ is a bijection.

Prove that if $a$ is an upper bound for $A$, and if $a$ is also element of $A$, then $a = \ sup A$

Checking Proof for the following Divisibility

Showing that $p$ is an odd prime $\iff$ $\forall a \in \Bbb N$ $gcd(a,p)=1$ or $gcd(a,p)=p$

Verification of proof of nonconvergence

Relatively Open Subset, Proof

Checking the proof for the following prime question.

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