List questions from matrices

Published on 31 Mar 2026 - 20:22

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Is it possible to represent any Type 1 ERO with a sequence of Type 2 & 3 EROs?

Published on 31 Mar 2026 - 20:30

95

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Determinant of an $n×n$ identity matrix with two arbitrary rows

Published on 25 Mar 2026 - 23:38

153

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The set defined by the orthogonal projector

Published on 22 Mar 2026 - 10:53

269

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Some Properties of trace of linear maps.

Published on 25 Mar 2026 - 11:21

264

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Prove $|A.B|=|A|.|B|$ using matrix algebra

Published on 26 Mar 2026 - 1:27

854

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Most usual notation for extracted matrix

Published on 01 Apr 2026 - 14:44

249

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Matrices similar to nilpotent

Published on 01 Apr 2026 - 4:36

39

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What is the basis of the linear space $U=\{A\in \mathcal{M}_{3\times 3}\,|\,A=A^T\}$

Published on 31 Mar 2026 - 22:08

215

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Consequences of degenerate eigenvectors

Published on 26 Mar 2026 - 16:10

242

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eigen-decomposition (largest eigenvalue) of a block matrix

Published on 26 Mar 2026 - 16:08

207

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Prove or disprove that $\rho(A) = \| A \|_2$ for any real symmetric matrix $A$

Published on 22 Mar 2026 - 15:05

1.4k

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Why does a markov matrix always have an eigenvalue of 1?

Published on 26 Mar 2026 - 12:34

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Suppose $a,b,c \neq 0$. Show that $\det(1+a,1,1),(1,1+b,1),(1,1,1+c) = abc\left(1 + \frac1a + \frac1b + \frac1c\right)$

Published on 25 Mar 2026 - 23:42

2.3k

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It's possible use Cramer's Rule in a non-square Matrix?

Published on 31 Mar 2026 - 23:50

List Question

Do Matrices have to be square when using LU Factorization?

Is it possible to represent any Type 1 ERO with a sequence of Type 2 & 3 EROs?

Determinant of an $n×n$ identity matrix with two arbitrary rows

The set defined by the orthogonal projector

Some Properties of trace of linear maps.

Prove $|A.B|=|A|.|B|$ using matrix algebra

Most usual notation for extracted matrix

Matrices similar to nilpotent

What is the basis of the linear space $U=\{A\in \mathcal{M}_{3\times 3}\,|\,A=A^T\}$

Consequences of degenerate eigenvectors

eigen-decomposition (largest eigenvalue) of a block matrix

Prove or disprove that $\rho(A) = \| A \|_2$ for any real symmetric matrix $A$

Why does a markov matrix always have an eigenvalue of 1?

Suppose $a,b,c \neq 0$. Show that $\det(1+a,1,1),(1,1+b,1),(1,1,1+c) = abc\left(1 + \frac1a + \frac1b + \frac1c\right)$

It's possible use Cramer's Rule in a non-square Matrix?

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