List questions from linear-algebra

Published on 20 Mar 2026 - 3:50

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Inequality regarding norm of a positive definite matrix

Published on 22 Mar 2026 - 9:50

51

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Recovering original matrix from PCA components

Published on 25 Jan 2018 - 11:57

707

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Number of non-negative integral solutions of $2x+3y+z=19$

Published on 25 Mar 2026 - 1:18

62

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Basis of the polynomials

Published on 25 Mar 2026 - 7:42

119

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Rotate $y=\sqrt {x}$

Published on 25 Jan 2018 - 13:52

42

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Closedness of vectorspace

Published on 26 Mar 2026 - 23:11

134

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Trace of $2\times2$ matrices

Published on 22 Mar 2026 - 4:11

85

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$n$-dimensional quadratic equation $(Ax)x + Bx + c = 0$

Published on 26 Mar 2026 - 3:00

396

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A book on linear inequalities

Published on 25 Mar 2026 - 7:40

69

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$T \in \mathcal L(V,W)$ is surjective $\iff ($range $T)^0 = \{0\}$

Published on 22 Mar 2026 - 9:48

169

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Series of functions form a basis in $\mathbb R[X]$

Published on 25 Mar 2026 - 7:47

131

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Transforming a vector/matrix fraction to its product

Published on 24 Mar 2026 - 20:32

1.5k

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Find invertible matrices $P,Q$ such that $A^0=PAQ$

Published on 25 Mar 2026 - 16:01

89

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Linear isomorphism of quotient spaces

Published on 23 Mar 2026 - 7:02

List Question

Matrix $A$ projects vectors orthogonally to the plane $y=z$. Find $A$.

Inequality regarding norm of a positive definite matrix

Recovering original matrix from PCA components

Number of non-negative integral solutions of $2x+3y+z=19$

Basis of the polynomials

Rotate $y=\sqrt {x}$

Closedness of vectorspace

Trace of $2\times2$ matrices

$n$-dimensional quadratic equation $(Ax)x + Bx + c = 0$

A book on linear inequalities

$T \in \mathcal L(V,W)$ is surjective $\iff ($range $T)^0 = \{0\}$

Series of functions form a basis in $\mathbb R[X]$

Transforming a vector/matrix fraction to its product

Find invertible matrices $P,Q$ such that $A^0=PAQ$

Linear isomorphism of quotient spaces

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