Question

Given a mapping for $\mathbb R^2 \to \mathbb R^3 , A,$ find new basis for $\mathbb R^2$ and $\mathbb R^3$ such that the mapping is now diagonal

score 35 · Answer 1 · 2026-03-25 23:44:00

35

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Given a mapping for $\mathbb R^2 \to \mathbb R^3 , A,$ find new basis for $\mathbb R^2$ and $\mathbb R^3$ such that the mapping is now diagonal

Published on 25 Mar 2026 - 23:44

score 1.6k · Answer 2 · 2018-04-12 16:45:00

1.6k

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Matrix with only real eigenvalues is similar to upper triangular matrix

Published on 12 Apr 2018 - 16:45

score 70 · Answer 3 · 2026-03-28 16:58:06

70

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Number of n X n binary matrices with every 1 adjacent to some zero and every 0 adjacent to some one, horizontally or vertically.

Published on 28 Mar 2026 - 16:58

score 321 · Answer 4 · 2026-03-24 20:32:03

321

Views

On problem regarding the quadratic form $yx+z^2$.

Published on 24 Mar 2026 - 20:32

score 176 · Answer 5 · 2018-04-12 18:18:53

Find the precise conditions on $a,b,c$ so that $\left[\begin{smallmatrix}a&b\\c&d\end{smallmatrix}\right]$ is nonnegative definite.

score 1.6k · Answer 6 · 2026-03-28 13:42:22

1.6k

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Does the algebraic multiplicity of all the eigenvalues of a matrix always add up to the dimension of the matrix?

Published on 28 Mar 2026 - 13:42

score 1.7k · Answer 7 · 2018-04-12 20:02:12

1.7k

Views

adjoint of a matrix with real entries?

Published on 12 Apr 2018 - 20:02

score 168 · Answer 8 · 2026-03-25 04:38:21

168

Views

Derivative transpose (follow up)

Published on 25 Mar 2026 - 4:38

score 115 · Answer 9 · 2026-04-08 13:48:49

115

Views

What is Matrix representation of Lagrange's identity?

Published on 08 Apr 2026 - 13:48

score 1k · Answer 10 · 2018-04-13 09:49:59

1k

Views

Minimum value trace of A*Atranspose

Published on 13 Apr 2018 - 9:49

score 134 · Answer 11 · 2026-03-24 20:31:56

134

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Positive-semidefiniteness of certain matrix

Published on 24 Mar 2026 - 20:31

score 1.2k · Answer 12 · 2026-03-25 07:48:49

1.2k

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Fundamental matrix of a Markov chain

Published on 25 Mar 2026 - 7:48

score 39 · Answer 13 · 2026-03-27 07:41:17

39

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Name for square sub-matrix containing no diagonals of main matrix?

Published on 27 Mar 2026 - 7:41

score 73 · Answer 14 · 2018-04-13 17:18:34

If $A, B$ are both $n×n$ column-stochastic matrices, then for any $w∈[0, 1], \ (1 − w)A + wB$ is also column-stochastic?

score 343 · Answer 15 · 2018-04-13 18:37:34

343

Views

WHY Gauss-Jordan method inverses matrix?

Published on 13 Apr 2018 - 18:37

List Question

Given a mapping for $\mathbb R^2 \to \mathbb R^3 , A,$ find new basis for $\mathbb R^2$ and $\mathbb R^3$ such that the mapping is now diagonal

Matrix with only real eigenvalues is similar to upper triangular matrix

Number of n X n binary matrices with every 1 adjacent to some zero and every 0 adjacent to some one, horizontally or vertically.

On problem regarding the quadratic form $yx+z^2$.

Find the precise conditions on $a,b,c$ so that $\left[\begin{smallmatrix}a&b\\c&d\end{smallmatrix}\right]$ is nonnegative definite.

Does the algebraic multiplicity of all the eigenvalues of a matrix always add up to the dimension of the matrix?

adjoint of a matrix with real entries?

Derivative transpose (follow up)

What is Matrix representation of Lagrange's identity?

Minimum value trace of A*Atranspose

Positive-semidefiniteness of certain matrix

Fundamental matrix of a Markov chain

Name for square sub-matrix containing no diagonals of main matrix?

If $A, B$ are both $n×n$ column-stochastic matrices, then for any $w∈[0, 1], \ (1 − w)A + wB$ is also column-stochastic?

WHY Gauss-Jordan method inverses matrix?

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