List questions from inner-products

Published on 11 Apr 2026 - 8:00

282

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Proving that eigenvalues of real self adjoint endomorphism are real

Published on 15 Apr 2026 - 21:19

114

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f linear with $\|f(x)\| = \|x\|$ then $\langle f(x),f(y)\rangle = \langle x,y\rangle$

Published on 16 Apr 2026 - 2:25

104

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Proving that the map between Hilbert spaces is unique.

Published on 11 Apr 2026 - 22:28

64

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Difference between $\vec a \cdot \vec b$ and $\vec a^T \cdot \vec b$?

Published on 16 Apr 2026 - 1:46

92

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How to show that $x^t A x $ is divisible by $2$ where $A$ is an $n \times n$ symmetric matrix with all its diagonal entries are zero?

Published on 14 Apr 2026 - 16:49

134

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On tensor product of scalar products

Published on 17 Apr 2026 - 13:36

74

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Work of weight force

Published on 13 Apr 2026 - 19:42

135

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Is there a name for this operation (involving a dot product)?

Published on 10 Apr 2026 - 23:17

108

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Isometries and their square roots

Published on 31 Mar 2026 - 16:53

170

Views

Understanding proof of proposition for Linear Algebra

Published on 09 Apr 2026 - 7:02

120

Views

Create Inner product so basis is ortonormal

Published on 13 Apr 2026 - 21:56

404

Views

Uniqueness of orthogonal projection in closed subspace of Hilbert space

Published on 15 Apr 2026 - 12:45

31

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Inertia moment: column vectors and products

Published on 12 Apr 2026 - 8:38

50

Views

product of two unit vectors and a sum of orthonormal basis vectors

Published on 15 Apr 2026 - 15:56

List Question

How to estimate the value of one dot product given the value of another?

Proving that eigenvalues of real self adjoint endomorphism are real

f linear with $\|f(x)\| = \|x\|$ then $\langle f(x),f(y)\rangle = \langle x,y\rangle$

Proving that the map between Hilbert spaces is unique.

Difference between $\vec a \cdot \vec b$ and $\vec a^T \cdot \vec b$?

How to show that $x^t A x $ is divisible by $2$ where $A$ is an $n \times n$ symmetric matrix with all its diagonal entries are zero?

On tensor product of scalar products

Work of weight force

Is there a name for this operation (involving a dot product)?

Isometries and their square roots

Understanding proof of proposition for Linear Algebra

Create Inner product so basis is ortonormal

Uniqueness of orthogonal projection in closed subspace of Hilbert space

Inertia moment: column vectors and products

product of two unit vectors and a sum of orthonormal basis vectors

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