Question

Question about proof from Friedberg's Linear Algebra

score 268 · Answer 1 · 2026-04-10 00:10:45

268

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Question about proof from Friedberg's Linear Algebra

Published on 10 Apr 2026 - 0:10

score 888 · Answer 2 · 2026-05-10 21:58:45

888

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SVD of orthogonal matrix and multiplying the left and right singular matrices?

Published on 10 May 2026 - 21:58

score 129 · Answer 3 · 2026-04-16 07:16:22

129

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$\operatorname{rank}(A+B) \le \operatorname{rank}(A) + \operatorname{rank}(B)$

Published on 16 Apr 2026 - 7:16

score 146 · Answer 4 · 2026-04-11 19:09:08

146

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If complementary subspaces are almost orthogonal, is the same true for their orthogonal complements?

Published on 11 Apr 2026 - 19:09

score 46 · Answer 5 · 2026-04-11 05:51:52

46

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orthogonality of two vectors

Published on 11 Apr 2026 - 5:51

score 5.7k · Answer 6 · 2026-04-16 15:20:32

5.7k

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Given matrices $A$ and $B$, solve $XA = B$

Published on 16 Apr 2026 - 15:20

score 101 · Answer 7 · 2026-04-12 15:17:45

101

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Is $X \mapsto A-BX$ an open map?

Published on 12 Apr 2026 - 15:17

score 420 · Answer 8 · 2026-04-11 12:35:23

420

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When are $V$ and $V^{*}$ canonically isomorphic?

Published on 11 Apr 2026 - 12:35

score 92 · Answer 9 · 2026-04-16 02:09:49

92

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How can I derive k or x in s = (m + r*x)/k, when x is unknown constant and k is unknown variable?

Published on 16 Apr 2026 - 2:09

score 368 · Answer 10 · 2026-04-13 07:59:19

368

Views

If $v\in\operatorname{span}(v_i)$ has unique representation, then $(v_i)$ is linearly independent.

Published on 13 Apr 2026 - 7:59

score 84 · Answer 11 · 2026-04-15 15:44:08

84

Views

Find a matrix such that $XX'= I$

Published on 15 Apr 2026 - 15:44

score 875 · Answer 12 · 2026-04-13 15:02:49

875

Views

What topics I need to cover in order to understand Black Scholes Option Pricing Model?

Published on 13 Apr 2026 - 15:02

score 81 · Answer 13 · 2026-05-10 15:27:15

81

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Why do this trick works?

Published on 10 May 2026 - 15:27

score 284 · Answer 14 · 2026-04-10 05:53:28

284

Views

Trouble finding conjugate transpose of differentiation operator

Published on 10 Apr 2026 - 5:53

score 716 · Answer 15 · 2026-05-10 16:59:49

716

Views

Expressing conversion of a $(1,1)$ tensor to a $(2,0)$ tensor in terms of matrices

Published on 10 May 2026 - 16:59

List Question

Question about proof from Friedberg's Linear Algebra

SVD of orthogonal matrix and multiplying the left and right singular matrices?

$\operatorname{rank}(A+B) \le \operatorname{rank}(A) + \operatorname{rank}(B)$

If complementary subspaces are almost orthogonal, is the same true for their orthogonal complements?

orthogonality of two vectors

Given matrices $A$ and $B$, solve $XA = B$

Is $X \mapsto A-BX$ an open map?

When are $V$ and $V^{*}$ canonically isomorphic?

How can I derive k or x in s = (m + r*x)/k, when x is unknown constant and k is unknown variable?

If $v\in\operatorname{span}(v_i)$ has unique representation, then $(v_i)$ is linearly independent.

Find a matrix such that $XX'= I$

What topics I need to cover in order to understand Black Scholes Option Pricing Model?

Why do this trick works?

Trouble finding conjugate transpose of differentiation operator

Expressing conversion of a $(1,1)$ tensor to a $(2,0)$ tensor in terms of matrices

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