List questions from proof-explanation

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Baire Category theorem application

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A question about Tietze extension theroem

Published on 09 Apr 2026 - 21:31

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For $a \in \mathbb Z$, $3\mid a$ if and only if $3\mid a^ 2$

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Questions about distributivity of dot product proof

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Theorem 9.13 in Rudin's Real and Complex Analysis

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Problem about $T-$conductor in Hoffman-Kunze book

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Why $\left\| \begin{pmatrix} 0 &B\\ C &0 \end{pmatrix}\right\|\leq\left\| \begin{pmatrix} A &B\\ C &D \end{pmatrix}\right\|$?

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Understanding the proof of the Lebesgue Covering Lemma.

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About the proof of least approximate theorem for inner product space

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How to Show that $\frac{1}{\sqrt{n}}\|A\|_2\leq \|A\|_1\leq \sqrt{n}\|A\|_2$

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If a linear system has more than one solution, prove that it has infinite solutions

Published on 14 Apr 2026 - 12:55

119

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Asymptotic behaviour of a sequence of functions

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352

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Solution of Problem 22 in section 4 in chapter 12 of Royden "real analysis third edition "

Published on 10 Apr 2026 - 7:45

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Proof question, inequalities

Published on 09 Apr 2026 - 22:42

List Question

Help in proving continuity

Baire Category theorem application

A question about Tietze extension theroem

For $a \in \mathbb Z$, $3\mid a$ if and only if $3\mid a^ 2$

Questions about distributivity of dot product proof

Theorem 9.13 in Rudin's Real and Complex Analysis

Problem about $T-$conductor in Hoffman-Kunze book

Why $\left\| \begin{pmatrix} 0 &B\\ C &0 \end{pmatrix}\right\|\leq\left\| \begin{pmatrix} A &B\\ C &D \end{pmatrix}\right\|$?

Understanding the proof of the Lebesgue Covering Lemma.

About the proof of least approximate theorem for inner product space

How to Show that $\frac{1}{\sqrt{n}}\|A\|_2\leq \|A\|_1\leq \sqrt{n}\|A\|_2$

If a linear system has more than one solution, prove that it has infinite solutions

Asymptotic behaviour of a sequence of functions

Solution of Problem 22 in section 4 in chapter 12 of Royden "real analysis third edition "

Proof question, inequalities

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