List questions from projection-matrices

Published on 30 May 2020 - 16:09

265

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How would I go about solving this projection matrices question?

Published on 02 Jun 2020 - 1:17

483

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Proving "annihilator matrix "is positive semidefinite

Published on 26 Mar 2026 - 19:24

609

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Prove that if $P_1, P_2$ and $P_1+P_2$ are projections, then $P_1P_2 = 0$

Published on 08 Jun 2020 - 1:26

213

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what's the rank of $ I - X(X^TX)^{-1}X^T$

Published on 08 Jun 2020 - 10:50

177

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Can every square matrix be written as product of an invertible matrix and a projection matrix?

Published on 14 Jun 2020 - 21:01

21

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Proyection of a subspace.

Published on 17 Jun 2020 - 20:10

1.4k

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Linear Algebra Problem: projection matrix of eigenvector space

Published on 20 Jun 2020 - 7:32

492

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Relationship between the eigenvectors and eigenvalues of a non-symmetric projection matrix $D$ and the matrix $DH$ where $H$ is arbitrary.

Published on 23 Jun 2020 - 1:01

64

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Find $\phi_1(x)$ and $\phi_2(x)$ such that $\phi_1 + \phi_2 = \psi$

Published on 28 Jun 2020 - 23:55

23

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Hilbert space subspace of "equally projected elements"

Published on 09 Jul 2020 - 11:51

58

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Concrete form of the projection matrix

Published on 14 Jul 2020 - 23:06

68

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projection - frustum to a NDC cube mapping

Published on 18 Jul 2020 - 16:49

286

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Proof Perspective Projection is not Affine

Published on 26 Mar 2026 - 3:00

193

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For a projection $\Pi$, is $\text{tr}(\Pi X)\leq \text{tr}(X)$?

Published on 22 Jul 2020 - 15:10

List Question

Orthogonal projection matrix of a matrix with one column sign switched

How would I go about solving this projection matrices question?

Proving "annihilator matrix "is positive semidefinite

Prove that if $P_1, P_2$ and $P_1+P_2$ are projections, then $P_1P_2 = 0$

what's the rank of $ I - X(X^TX)^{-1}X^T$

Can every square matrix be written as product of an invertible matrix and a projection matrix?

Proyection of a subspace.

Linear Algebra Problem: projection matrix of eigenvector space

Relationship between the eigenvectors and eigenvalues of a non-symmetric projection matrix $D$ and the matrix $DH$ where $H$ is arbitrary.

Find $\phi_1(x)$ and $\phi_2(x)$ such that $\phi_1 + \phi_2 = \psi$

Hilbert space subspace of "equally projected elements"

Concrete form of the projection matrix

projection - frustum to a NDC cube mapping

Proof Perspective Projection is not Affine

For a projection $\Pi$, is $\text{tr}(\Pi X)\leq \text{tr}(X)$?

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