List questions from solution-verification

Published on 10 May 2026 - 18:04

236

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Proof of monotonicity of Lebesgue measure by contradiction

Published on 12 Apr 2026 - 23:36

515

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Proof verification - If $f$ is continuous, then $f_{n}$ is continuous in at least one $n \in \mathbb{N}$

Published on 16 Apr 2026 - 5:27

897

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Proof verification: All metric spaces gave the "Hausdorff property".

Published on 10 May 2026 - 20:39

101

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Derivative of a logarithm (chain rule)

Published on 11 Apr 2026 - 8:16

3.2k

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Suppose a and b are real numbers. Prove that if $a < b < 0$ then $a^2 > b^2$

Published on 16 Apr 2026 - 7:02

1.1k

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Proof of Mantel's Theorem

Published on 11 Apr 2026 - 22:19

1k

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$A$ connected $\subset X$ connected, $X\setminus A$ is the union of two separated sets $B,C$, prove that $A\cup B$ is connected.

Published on 14 Apr 2026 - 20:46

101

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Number of discontinuities of $\lfloor\sin ^{-1} x\rfloor+\lfloor\cos ^{-1} x\rfloor$

Published on 17 Apr 2026 - 4:21

2.5k

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Local grocery store just received a large shipment of apples, oranges, pears, and bananas—more than $100$ pieces each.

Published on 15 Apr 2026 - 23:54

202

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How to choose between two solutions where both seem to be correct?

Published on 16 Apr 2026 - 23:50

497

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Square roots proved irrational by denominator descent

Published on 10 May 2026 - 14:55

63

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A question about the ideals of a ring of power series.

Published on 15 Apr 2026 - 6:05

347

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Solve integration containing exponential inner product function

Published on 14 Apr 2026 - 20:07

2.9k

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Finding the harmonic conjugate of $T(x,y)= e^{-y} \sin x$?

Published on 10 May 2026 - 20:39

List Question

Fundamental Group of Polygon

Proof of monotonicity of Lebesgue measure by contradiction

Proof verification - If $f$ is continuous, then $f_{n}$ is continuous in at least one $n \in \mathbb{N}$

Proof verification: All metric spaces gave the "Hausdorff property".

Derivative of a logarithm (chain rule)

Suppose a and b are real numbers. Prove that if $a < b < 0$ then $a^2 > b^2$

Proof of Mantel's Theorem

$A$ connected $\subset X$ connected, $X\setminus A$ is the union of two separated sets $B,C$, prove that $A\cup B$ is connected.

Number of discontinuities of $\lfloor\sin ^{-1} x\rfloor+\lfloor\cos ^{-1} x\rfloor$

Local grocery store just received a large shipment of apples, oranges, pears, and bananas—more than $100$ pieces each.

How to choose between two solutions where both seem to be correct?

Square roots proved irrational by denominator descent

A question about the ideals of a ring of power series.

Solve integration containing exponential inner product function

Finding the harmonic conjugate of $T(x,y)= e^{-y} \sin x$?

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