Question

Every surjective isometry on a Hilbert space is indeed a unitary operator

score 778 · Answer 1 · 2019-05-20 01:48:10

778

Views

Every surjective isometry on a Hilbert space is indeed a unitary operator

Published on 20 May 2019 - 1:48

score 51 · Answer 2 · 2019-05-20 10:33:12

51

Views

Equivalence of statements about bounded linear maps on a Hilbert space

Published on 20 May 2019 - 10:33

score 524 · Answer 3 · 2026-03-25 11:02:47

524

Views

Does a local isometry imply that the first fundamental form has F=0

Published on 25 Mar 2026 - 11:02

score 43 · Answer 4 · 2026-03-25 09:23:35

43

Views

Solving PDE produced for $C^1$ isometric embedding and its complexity analysis

Published on 25 Mar 2026 - 9:23

score 516 · Answer 5 · 2019-05-22 17:06:32

516

Views

Are all isometries of subsets affine?

Published on 22 May 2019 - 17:06

score 331 · Answer 6 · 2019-05-28 05:30:03

331

Views

$(c_{0})^{}$ is isometrically isomorphic to a subspace of $(\ell_{\infty})^{}$

Published on 28 May 2019 - 5:30

score 69 · Answer 7 · 2019-05-28 14:43:19

69

Views

Example of a non-surjective isometric mapping on a totally bounded metric space

Published on 28 May 2019 - 14:43

score 508 · Answer 8 · 2019-05-28 20:47:09

508

Views

What if a scale factor is less than 0 in a dilation?

Published on 28 May 2019 - 20:47

score 136 · Answer 9 · 2019-05-29 07:39:00

136

Views

Two metric spaces X and Y being isometric implies group of isometries are isomorphic

Published on 29 May 2019 - 7:39

score 66 · Answer 10 · 2019-06-02 14:25:47

66

Views

Representation of positive integer as a linear combination of squares

Published on 02 Jun 2019 - 14:25

score 829 · Answer 11 · 2019-06-06 20:27:02

829

Views

An easy proof that an isometry preserving the zero vector is linear

Published on 06 Jun 2019 - 20:27

score 331 · Answer 12 · 2019-06-10 15:12:46

331

Views

change of parameters of a helicoid

Published on 10 Jun 2019 - 15:12

score 344 · Answer 13 · 2019-06-12 13:15:31

344

Views

Check whether a function is an isometry using definition

Published on 12 Jun 2019 - 13:15

score 131 · Answer 14 · 2019-06-15 13:18:03

131

Views

Checking if $f: \Phi_1 \to \Phi_2 \; ; f_1(\theta, v) \mapsto f_2(\theta, \sinh v)$ is an isometry.

Published on 15 Jun 2019 - 13:18

score 482 · Answer 15 · 2019-06-22 15:32:47

482

Views

Fixpoints of isometry is a totally geodesic submanifold

Published on 22 Jun 2019 - 15:32

List Question

Every surjective isometry on a Hilbert space is indeed a unitary operator

Equivalence of statements about bounded linear maps on a Hilbert space

Does a local isometry imply that the first fundamental form has F=0

Solving PDE produced for $C^1$ isometric embedding and its complexity analysis

Are all isometries of subsets affine?

$(c_{0})^{}$ is isometrically isomorphic to a subspace of $(\ell_{\infty})^{}$

Example of a non-surjective isometric mapping on a totally bounded metric space

What if a scale factor is less than 0 in a dilation?

Two metric spaces X and Y being isometric implies group of isometries are isomorphic

Representation of positive integer as a linear combination of squares

An easy proof that an isometry preserving the zero vector is linear

change of parameters of a helicoid

Check whether a function is an isometry using definition

Checking if $f: \Phi_1 \to \Phi_2 \; ; f_1(\theta, v) \mapsto f_2(\theta, \sinh v)$ is an isometry.

Fixpoints of isometry is a totally geodesic submanifold

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