List questions from normed-spaces

Published on 01 Nov 2019 - 15:30

128

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Differentiating the Norm

Published on 03 Apr 2026 - 2:30

42

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Is my solution flawed? (Showing compactness)

Published on 03 Apr 2026 - 15:34

46

Views

compactness of a general normed vector space

Published on 03 Apr 2026 - 15:35

55

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Regarding relation between dimension of dual space of normed linear space X and dimension of X.

Published on 26 Mar 2026 - 13:52

187

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Convexity of $\{x\in \mathbb R^n: |x-a| \leq \theta|x-b|\}$

Published on 04 Nov 2019 - 7:29

422

Views

Sketch unit circle for matrix norm

Published on 04 Nov 2019 - 17:07

229

Views

State matrix norm (respect to Matrix) with matrix norm (respect to infinity)

Published on 25 Mar 2026 - 19:02

22

Views

How to get $\lim_{t \to 0} \frac{\left \|a + t\frac{a}{\|a\|} \right\| - \|a\|}{t} = \lim_{t \to 0} \frac{(\|a\|+t) - \|a\|}{t}$?

Published on 04 Nov 2019 - 21:13

92

Views

Underdetermined Linear Systems: Minimum Norm?

Published on 03 Apr 2026 - 22:55

279

Views

Create a scalar product based on a norm

Published on 05 Apr 2026 - 23:41

29

Views

Proving inequality with vectors

Published on 05 Nov 2019 - 19:01

783

Views

how to compute subgradient of p-norm, $1 \leq p \leq \infty$

Published on 25 Mar 2026 - 10:57

61

Views

Why are $M$ and $N$ closed but $M+N$ is not closed

Published on 06 Nov 2019 - 23:29

26

Views

How can I show that the elements of the unitary sphere are not parallel?

Published on 27 Mar 2026 - 14:02

List Question

$\Vert Ax\Vert_2\le \left(\Vert A-B\Vert_F+\Vert B\Vert_2\right)\Vert x\Vert_2?$

Differentiating the Norm

Is my solution flawed? (Showing compactness)

compactness of a general normed vector space

Regarding relation between dimension of dual space of normed linear space X and dimension of X.

Convexity of $\{x\in \mathbb R^n: |x-a| \leq \theta|x-b|\}$

Sketch unit circle for matrix norm

State matrix norm (respect to Matrix) with matrix norm (respect to infinity)

How to get $\lim_{t \to 0} \frac{\left \|a + t\frac{a}{\|a\|} \right\| - \|a\|}{t} = \lim_{t \to 0} \frac{(\|a\|+t) - \|a\|}{t}$?

Underdetermined Linear Systems: Minimum Norm?

Create a scalar product based on a norm

Proving inequality with vectors

how to compute subgradient of p-norm, $1 \leq p \leq \infty$

Why are $M$ and $N$ closed but $M+N$ is not closed

How can I show that the elements of the unitary sphere are not parallel?

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