Question

Operator norm of rectangular $(m \times n)$-matrix with $m < n$ orthonormal rows?

score 490 · Answer 1 · 2026-03-25 12:53:43

490

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Operator norm of rectangular $(m \times n)$-matrix with $m < n$ orthonormal rows?

Published on 25 Mar 2026 - 12:53

score 900 · Answer 2 · 2026-03-25 06:30:33

900

Views

How do I check that my edge normals in an arbitary triangle are inward (or outward)?

Published on 25 Mar 2026 - 6:30

score 44 · Answer 3 · 2019-07-13 10:40:07

44

Views

Proof of orthonormality of Haar System (book is wrong)?

Published on 13 Jul 2019 - 10:40

score 22 · Answer 4 · 2019-07-22 19:34:35

22

Views

How to find "sparse" orthonormal vectors to some matrix A?

Published on 22 Jul 2019 - 19:34

score 55 · Answer 5 · 2026-03-25 03:20:43

55

Views

Rearranging of orthonormal decompositions [Proof Verification]

Published on 25 Mar 2026 - 3:20

score 327 · Answer 6 · 2019-07-25 00:29:21

327

Views

Proof of existence of an orthonormal basis consisting of eigenvectors.

Published on 25 Jul 2019 - 0:29

score 80 · Answer 7 · 2019-08-01 14:52:31

80

Views

Linear independence of a set of vectors + orthonormal basis

Published on 01 Aug 2019 - 14:52

score 487 · Answer 8 · 2019-08-02 07:41:28

487

Views

Proof of acute and obtuse angle bisectors and vector normal to the lines

Published on 02 Aug 2019 - 7:41

score 474 · Answer 9 · 2019-08-05 11:07:30

474

Views

Calculating an orthonormal vector from a given set of vectors in $ℝ^{3}$

Published on 05 Aug 2019 - 11:07

score 100 · Answer 10 · 2019-08-12 16:09:32

100

Views

Problem II.3.12: Prove that $\|x-p_{F}(x)\| = \inf_{y \in F} \|x-y\|$ for an orthonormal system in an inner product space

Published on 12 Aug 2019 - 16:09

score 79 · Answer 11 · 2019-08-12 18:25:33

79

Views

Problem II.3.13: How to prove $\sum_{k=0}^{m}|(x | u_{k})|^{2} \le \|x\|^{2}$ for an orthonormal system of an inner product space

Published on 12 Aug 2019 - 18:25

score 56 · Answer 12 · 2019-08-12 19:14:25

56

Views

Linear Algebra - Find an orthonormal basis

Published on 12 Aug 2019 - 19:14

score 452 · Answer 13 · 2019-08-23 11:10:39

452

Views

Orthonormal basis of a vector space with polynomials of the form $ax+b$

Published on 23 Aug 2019 - 11:10

score 216 · Answer 14 · 2019-08-27 07:57:42

216

Views

An inequality relates to a set of pairwise orthogonal unit vectors

Published on 27 Aug 2019 - 7:57

score 460 · Answer 15 · 2019-09-01 21:07:13

460

Views

Orthonormal basis of this normal operator

Published on 01 Sep 2019 - 21:07

List Question

Operator norm of rectangular $(m \times n)$-matrix with $m < n$ orthonormal rows?

How do I check that my edge normals in an arbitary triangle are inward (or outward)?

Proof of orthonormality of Haar System (book is wrong)?

How to find "sparse" orthonormal vectors to some matrix A?

Rearranging of orthonormal decompositions [Proof Verification]

Proof of existence of an orthonormal basis consisting of eigenvectors.

Linear independence of a set of vectors + orthonormal basis

Proof of acute and obtuse angle bisectors and vector normal to the lines

Calculating an orthonormal vector from a given set of vectors in $ℝ^{3}$

Problem II.3.12: Prove that $\|x-p_{F}(x)\| = \inf_{y \in F} \|x-y\|$ for an orthonormal system in an inner product space

Problem II.3.13: How to prove $\sum_{k=0}^{m}|(x | u_{k})|^{2} \le \|x\|^{2}$ for an orthonormal system of an inner product space

Linear Algebra - Find an orthonormal basis

Orthonormal basis of a vector space with polynomials of the form $ax+b$

An inequality relates to a set of pairwise orthogonal unit vectors

Orthonormal basis of this normal operator

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