List questions from solution-verification

Published on 29 Mar 2026 - 5:11

78

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Show that $(a_{n})^{\infty}_{n=1}$ is bounded iff $(b_{n})^{\infty}_{n=1}$ is bounded.

Published on 26 Mar 2026 - 11:04

54

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Prove that if $a_n$ and $b_n$ are equivalent Cauchy sequences as well as $b_n$ and $c_n$, then $a_n$ and $c_n$ are equivalent Cauchy sequences.

Published on 26 Mar 2026 - 11:01

37

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My attempt at proving $A\cup B=A \cup (B \cap A^{c})$

Published on 11 Mar 2020 - 4:33

74

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Sanity check answers of minimal polynomials

Published on 29 Mar 2026 - 22:07

51

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I want to find an optimal solution.... plz help!

Published on 26 Mar 2026 - 22:13

1.5k

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PDF of $\min$ and $\max$ of $n$ iid random variables

Published on 25 Mar 2026 - 14:26

527

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Proof $p$ is an attracting fixed point of $f$

Published on 28 Mar 2026 - 14:05

56

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$\sup L^1$ space with uniform integrability

Published on 26 Mar 2026 - 4:33

133

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The rank of a matrix and its invertibility

Published on 11 Mar 2020 - 12:38

1.6k

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Show that $\sqrt{x^2+y^2}$ is not differentiable at the origin.

Published on 11 Mar 2020 - 15:24

522

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One sided inverse

Published on 11 Mar 2020 - 18:07

51

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Calculate: $\int_{\mathbb{D}}\left(\sum_{k=0}^s{s \choose k}|z|^{2k}\right)^2d\mu(z)$

Published on 04 Apr 2026 - 14:50

326

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Use epsilon-delta definition of limit to establish the following: $\displaystyle\lim_{x\to 1}\frac{1}{2+\sqrt{x}}=\frac{1}{3}$

Published on 29 Mar 2026 - 16:00

136

Views

A group satisfying the minimal condition on subgroups is a torsion group.

Published on 26 Mar 2026 - 11:08

List Question

Is my proof of the Fibonacci sequence correct?

Show that $(a_{n})^{\infty}_{n=1}$ is bounded iff $(b_{n})^{\infty}_{n=1}$ is bounded.

Prove that if $a_n$ and $b_n$ are equivalent Cauchy sequences as well as $b_n$ and $c_n$, then $a_n$ and $c_n$ are equivalent Cauchy sequences.

My attempt at proving $A\cup B=A \cup (B \cap A^{c})$

Sanity check answers of minimal polynomials

I want to find an optimal solution.... plz help!

PDF of $\min$ and $\max$ of $n$ iid random variables

Proof $p$ is an attracting fixed point of $f$

$\sup L^1$ space with uniform integrability

The rank of a matrix and its invertibility

Show that $\sqrt{x^2+y^2}$ is not differentiable at the origin.

One sided inverse

Calculate: $\int_{\mathbb{D}}\left(\sum_{k=0}^s{s \choose k}|z|^{2k}\right)^2d\mu(z)$

Use epsilon-delta definition of limit to establish the following: $\displaystyle\lim_{x\to 1}\frac{1}{2+\sqrt{x}}=\frac{1}{3}$

A group satisfying the minimal condition on subgroups is a torsion group.

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