List questions from isometry

Published on 21 Mar 2026 - 1:51

52

Views

How does it follow that $A^T A = I$ from $m_{ij}m_{ik}=\delta _{jk}$?

Published on 20 Mar 2026 - 1:13

272

Views

Drawing the image of a circle under reflection through its center?

Published on 22 Mar 2026 - 12:05

243

Views

Check that the rotation isometry has an inverse

Published on 19 Mar 2026 - 21:00

240

Views

Isometry maps closed unit ball to closed unit balI

Published on 20 Mar 2026 - 5:35

4.7k

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Rotate around a specific point instead of 0,0,0

Published on 24 Mar 2026 - 15:29

56

Views

Minimal displacement for isometries composition

Published on 20 Mar 2026 - 12:40

996

Views

Proving that two curves in $\mathbb{R^3}$ with the same binormal vector are congruent

Published on 20 Mar 2026 - 5:45

53

Views

Dimension of real inner product with unitary transformation

Published on 22 Mar 2026 - 5:02

287

Views

Isometry and Orthogonal Decomposition

Published on 20 Mar 2026 - 8:26

244

Views

Can an orthogonal matrix preserve $\ell_p$-norm on a subspace?

Published on 22 Mar 2026 - 5:26

1k

Views

Problem in proof that isometry is linear

Published on 22 Mar 2026 - 19:27

310

Views

Unitary Matrix and Orthonormal Basis

Published on 23 Mar 2026 - 14:17

267

Views

Matrices and Unit Circle on an Orthonormal Basis

Published on 23 Mar 2026 - 9:03

71

Views

Factorization of Normal Operator

Published on 22 Mar 2026 - 19:57

List Question

Show that two isometries induce the same linear mapping

How does it follow that $A^T A = I$ from $m_{ij}m_{ik}=\delta _{jk}$?

Drawing the image of a circle under reflection through its center?

Check that the rotation isometry has an inverse

Isometry maps closed unit ball to closed unit balI

Rotate around a specific point instead of 0,0,0

Minimal displacement for isometries composition

Proving that two curves in $\mathbb{R^3}$ with the same binormal vector are congruent

Dimension of real inner product with unitary transformation

Isometry and Orthogonal Decomposition

Can an orthogonal matrix preserve $\ell_p$-norm on a subspace?

Problem in proof that isometry is linear

Unitary Matrix and Orthonormal Basis

Matrices and Unit Circle on an Orthonormal Basis

Factorization of Normal Operator

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