Question

Dimensions of matrix

score 452 · Answer 1 · 2026-04-11 05:05:19

452

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Dimensions of matrix

Published on 11 Apr 2026 - 5:05

score 525 · Answer 2 · 2026-04-15 00:13:31

525

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Dual norm of a truncated and ordered (decreasing order) $\ell_1$-norm

Published on 15 Apr 2026 - 0:13

score 1.5k · Answer 3 · 2026-04-08 11:18:50

1.5k

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How to find an explicit formula for linear transformation?

Published on 08 Apr 2026 - 11:18

score 29 · Answer 4 · 2026-04-10 03:27:06

29

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finding support of a linear combination of vectors

Published on 10 Apr 2026 - 3:27

score 498 · Answer 5 · 2026-04-16 03:26:34

498

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Find a basis and dimension of the subspace R^n spanned by the following sets

Published on 16 Apr 2026 - 3:26

score 26 · Answer 6 · 2026-04-12 20:41:26

26

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Determine the matrice of linear transformation relative to the basis

Published on 12 Apr 2026 - 20:41

score 49 · Answer 7 · 2026-04-12 08:40:24

49

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Provide parametisations for the triangle with vertices $1, 2i$ and $-1$

Published on 12 Apr 2026 - 8:40

score 685 · Answer 8 · 2026-04-16 03:04:55

685

Views

Linear independence of indicator functions

Published on 16 Apr 2026 - 3:04

score 107 · Answer 9 · 2026-04-18 14:55:02

107

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Find $x, y, z \in \mathbb{Z}$ such that :

Published on 18 Apr 2026 - 14:55

score 55 · Answer 10 · 2026-04-16 19:42:00

55

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Aligning three points by finding a value k, finding coefficients so that two lines are perpendicular and pass through a point

Published on 16 Apr 2026 - 19:42

score 81 · Answer 11 · 2026-04-12 01:57:26

81

Views

Is the cost of $\lVert \mathbf{v} \rVert_2$ really $O(n)$?

Published on 12 Apr 2026 - 1:57

score 41 · Answer 12 · 2026-04-15 13:51:36

41

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prove that the function g(x)=x does not belong in W=sp{1,cosx,sinx} .

Published on 15 Apr 2026 - 13:51

score 1.4k · Answer 13 · 2026-04-13 04:53:43

1.4k

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Sum of subsets in linear algebra

Published on 13 Apr 2026 - 4:53

score 91 · Answer 14 · 2026-04-14 20:30:20

91

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Let A be a real $n \times n$ matrix such that $\langle Ax,x\rangle \geq 0$ Prove that $Au=0$ iff $A^tu=0$.

Published on 14 Apr 2026 - 20:30

score 552 · Answer 15 · 2026-04-14 05:28:55

552

Views

If the $R$-module $M$ is finitely generated, but some generating set is not linearly independent, is $M$ not free?

Published on 14 Apr 2026 - 5:28

List Question

Dimensions of matrix

Dual norm of a truncated and ordered (decreasing order) $\ell_1$-norm

How to find an explicit formula for linear transformation?

finding support of a linear combination of vectors

Find a basis and dimension of the subspace R^n spanned by the following sets

Determine the matrice of linear transformation relative to the basis

Provide parametisations for the triangle with vertices $1, 2i$ and $-1$

Linear independence of indicator functions

Find $x, y, z \in \mathbb{Z}$ such that :

Aligning three points by finding a value k, finding coefficients so that two lines are perpendicular and pass through a point

Is the cost of $\lVert \mathbf{v} \rVert_2$ really $O(n)$?

prove that the function g(x)=x does not belong in W=sp{1,cosx,sinx} .

Sum of subsets in linear algebra

Let A be a real $n \times n$ matrix such that $\langle Ax,x\rangle \geq 0$ Prove that $Au=0$ iff $A^tu=0$.

If the $R$-module $M$ is finitely generated, but some generating set is not linearly independent, is $M$ not free?

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