Question

Inner product on space of functions from $R^n \rightarrow R^m$?

score 99 · Answer 1 · 2026-04-16 12:11:27

99

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Inner product on space of functions from $R^n \rightarrow R^m$?

Published on 16 Apr 2026 - 12:11

score 84 · Answer 2 · 2026-04-12 17:04:24

84

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Question about differentiability in $\mathbb{R}^n$

Published on 12 Apr 2026 - 17:04

score 48 · Answer 3 · 2026-04-16 01:42:51

48

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Why is the dot product non-zero for 90° rotated vector in xy plane?

Published on 16 Apr 2026 - 1:42

score 451 · Answer 4 · 2026-04-11 00:13:25

451

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Why is the magnitude of a complex number defined using complex conjugate?

Published on 11 Apr 2026 - 0:13

score 63 · Answer 5 · 2026-04-17 01:25:48

Proving that a right angle triangle is always formed when two vectors from either side of a semicircle join at a point on the circles circumferance

score 62 · Answer 6 · 2026-04-12 22:39:17

62

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What is λ when two vectors are perpendicular each other against

Published on 12 Apr 2026 - 22:39

score 78 · Answer 7 · 2026-04-14 04:13:14

78

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Showing a space of functions is a Hilbert space

Published on 14 Apr 2026 - 4:13

score 32 · Answer 8 · 2026-04-12 23:29:38

32

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Preservation of a scalar product under the action of an isomorphism

Published on 12 Apr 2026 - 23:29

score 75 · Answer 9 · 2026-04-15 19:14:01

75

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Given 2x2 rank-1 matrix A = xy^T where the dot product of x and y = 3

Published on 15 Apr 2026 - 19:14

score 94 · Answer 10 · 2026-04-17 05:53:22

94

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Why does $\langle (U^U - I)v, v\rangle = 0 \ \forall v$ imply that $U^U = I$, from the polarization identity?

Published on 17 Apr 2026 - 5:53

score 66 · Answer 11 · 2026-05-03 13:22:30

66

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Where am i wrong in these two proofs? $\vec A \times (\vec B \times \vec C)=-(\vec A \cdot \vec C)\vec B +(\vec A \cdot \vec B)\vec C $

Published on 03 May 2026 - 13:22

score 110 · Answer 12 · 2026-04-15 23:30:03

110

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Inner Product on Schwartz Space and $L^2$

Published on 15 Apr 2026 - 23:30

score 72 · Answer 13 · 2026-04-14 11:24:40

72

Views

Sensitivity in matrix multiplication $C=AB$ - condition number of $A$

Published on 14 Apr 2026 - 11:24

score 36 · Answer 14 · 2026-04-09 03:54:20

36

Views

Conditions for inner product sign with a linear transformation

Published on 09 Apr 2026 - 3:54

score 168 · Answer 15 · 2026-04-12 09:48:07

168

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How to show that the cartesian product of Hilbert spaces is a Hilbert space?

Published on 12 Apr 2026 - 9:48

List Question

Inner product on space of functions from $R^n \rightarrow R^m$?

Question about differentiability in $\mathbb{R}^n$

Why is the dot product non-zero for 90° rotated vector in xy plane?

Why is the magnitude of a complex number defined using complex conjugate?

Proving that a right angle triangle is always formed when two vectors from either side of a semicircle join at a point on the circles circumferance

What is λ when two vectors are perpendicular each other against

Showing a space of functions is a Hilbert space

Preservation of a scalar product under the action of an isomorphism

Given 2x2 rank-1 matrix A = xy^T where the dot product of x and y = 3

Why does $\langle (U^U - I)v, v\rangle = 0 \ \forall v$ imply that $U^U = I$, from the polarization identity?

Where am i wrong in these two proofs? $\vec A \times (\vec B \times \vec C)=-(\vec A \cdot \vec C)\vec B +(\vec A \cdot \vec B)\vec C $

Inner Product on Schwartz Space and $L^2$

Sensitivity in matrix multiplication $C=AB$ - condition number of $A$

Conditions for inner product sign with a linear transformation

How to show that the cartesian product of Hilbert spaces is a Hilbert space?

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