List questions from projection-matrices

208

Views

Clarification on terminology: the name for reducing (projecting?) a rank deficient matrix equation to a full rank equation of lower dimension

Published on 02 Oct 2020 - 16:35

151

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prove that covariance matrix can be expressed as $XCX^\top$ with C is centering matrix

Published on 07 Oct 2020 - 6:58

38

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Column space of matrix X

Published on 13 Oct 2020 - 5:41

586

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Representing projection operator in terms of orthonormal basis

Published on 17 Oct 2020 - 10:43

135

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Projection matrix multiplied by projection matrix.

Published on 18 Oct 2020 - 16:57

574

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Matrix expressions for the oblique projection onto subspace L in the direction of subspace K

Published on 21 Oct 2020 - 8:47

163

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Range of Idempotent matrices

Published on 26 Oct 2020 - 15:45

2.6k

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Prove $AA^+$ projects onto the column space of $A$

Published on 31 Oct 2020 - 4:47

82

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remove direction of non-standard basis from matrix

Published on 06 Nov 2020 - 13:42

41

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Given 2 matrices, find T

Published on 25 Mar 2026 - 19:00

43

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Stabiliser a Conic

Published on 16 Nov 2020 - 10:47

1.3k

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Find the matrix of the linear transformation $T : \Bbb R^3 \to \Bbb R^3$ that projects a vector onto the plane $x − y + 2z = 0$

Published on 16 Nov 2020 - 19:05

294

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Why is projection matrix diagonalisable?

Published on 19 Nov 2020 - 18:07

91

Views

Is this projection matrix?

Published on 21 Nov 2020 - 14:55

52

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A function of a matrix is a projection operator

Published on 25 Nov 2020 - 4:58

List Question

Clarification on terminology: the name for reducing (projecting?) a rank deficient matrix equation to a full rank equation of lower dimension

prove that covariance matrix can be expressed as $XCX^\top$ with C is centering matrix

Column space of matrix X

Representing projection operator in terms of orthonormal basis

Projection matrix multiplied by projection matrix.

Matrix expressions for the oblique projection onto subspace L in the direction of subspace K

Range of Idempotent matrices

Prove $AA^+$ projects onto the column space of $A$

remove direction of non-standard basis from matrix

Given 2 matrices, find T

Stabiliser a Conic

Find the matrix of the linear transformation $T : \Bbb R^3 \to \Bbb R^3$ that projects a vector onto the plane $x − y + 2z = 0$

Why is projection matrix diagonalisable?

Is this projection matrix?

A function of a matrix is a projection operator

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