Question

Is it possible to simplify this matrix operation?

score 42 · Answer 1 · 2026-04-08 10:21:26

42

Views

Is it possible to simplify this matrix operation?

Published on 08 Apr 2026 - 10:21

score 94 · Answer 2 · 2026-04-16 05:34:15

94

Views

At most finite elements of the sequence $\{x_{n}\}_{n\in \mathbb{Z}^+}$ is nonzero under certain conditions.

Published on 16 Apr 2026 - 5:34

score 43 · Answer 3 · 2026-04-15 07:09:50

43

Views

Verifying change of basis calculation by example, my lack of understanding/mistake or Author's?

Published on 15 Apr 2026 - 7:09

score 62 · Answer 4 · 2026-04-17 15:59:22

62

Views

Diagonalization of $A=\begin{pmatrix}8&12&-18\\ 4&18&-20\\ 4&13&-15\end{pmatrix}$ such that $A=PDP^{-1}$, how to find P, specifically, $P_2, P_3$

Published on 17 Apr 2026 - 15:59

score 74 · Answer 5 · 2026-04-09 19:38:17

74

Views

Calculator gives unit vector, how to derive vector given only unit vectors?

Published on 09 Apr 2026 - 19:38

score 28 · Answer 6 · 2026-04-10 20:36:25

28

Views

General term for a series of matrix multiplication

Published on 10 Apr 2026 - 20:36

score 457 · Answer 7 · 2026-04-10 21:16:06

457

Views

How to decompose matrix to its composition of rotation and scaling?

Published on 10 Apr 2026 - 21:16

score 201 · Answer 8 · 2026-04-17 14:24:30

201

Views

Minimal polynomial of the matrix $A = \begin{bmatrix} c & 1 & 0 & 0\\ 0 & c & 0 & 0 \\ 0 & 0 & c & 1\\ 0 & 0 & 0 & c \end{bmatrix}$

Published on 17 Apr 2026 - 14:24

score 129 · Answer 9 · 2026-04-15 03:46:10

129

Views

Equivalent parametric solution sets

Published on 15 Apr 2026 - 3:46

score 74 · Answer 10 · 2026-04-16 11:46:20

74

Views

2 identities related to determinant and exponential function

Published on 16 Apr 2026 - 11:46

score 67 · Answer 11 · 2026-04-11 15:16:26

67

Views

How to solve the matrix equation $\mbox{tr}(\mathbf{X}\mathbf{X}^H)\overline{\mathbf{B}}=\mbox{tr}(\mathbf{X}\mathbf{X}^H\mathbf{B})\mathbf{I}$?

Published on 11 Apr 2026 - 15:16

score 253 · Answer 12 · 2026-04-16 09:57:29

253

Views

If square matrices $A^2 + B^2 = 2AB$, then prove that $p_A(x) = p_B(x)$

Published on 16 Apr 2026 - 9:57

score 118 · Answer 13 · 2026-04-12 14:25:35

118

Views

When does the following frobenius norm equality hold?

Published on 12 Apr 2026 - 14:25

score 36 · Answer 14 · 2026-04-14 06:30:34

36

Views

insert a matrix in-between product of vectors

Published on 14 Apr 2026 - 6:30

score 168 · Answer 15 · 2026-04-12 02:54:10

168

Views

Are there any solutions to $Ax=b$ satisfying $\Vert x \rVert=1$?

Published on 12 Apr 2026 - 2:54

List Question

Is it possible to simplify this matrix operation?

At most finite elements of the sequence $\{x_{n}\}_{n\in \mathbb{Z}^+}$ is nonzero under certain conditions.

Verifying change of basis calculation by example, my lack of understanding/mistake or Author's?

Diagonalization of $A=\begin{pmatrix}8&12&-18\\ 4&18&-20\\ 4&13&-15\end{pmatrix}$ such that $A=PDP^{-1}$, how to find P, specifically, $P_2, P_3$

Calculator gives unit vector, how to derive vector given only unit vectors?

General term for a series of matrix multiplication

How to decompose matrix to its composition of rotation and scaling?

Minimal polynomial of the matrix $A = \begin{bmatrix} c & 1 & 0 & 0\\ 0 & c & 0 & 0 \\ 0 & 0 & c & 1\\ 0 & 0 & 0 & c \end{bmatrix}$

Equivalent parametric solution sets

2 identities related to determinant and exponential function

How to solve the matrix equation $\mbox{tr}(\mathbf{X}\mathbf{X}^H)\overline{\mathbf{B}}=\mbox{tr}(\mathbf{X}\mathbf{X}^H\mathbf{B})\mathbf{I}$?

If square matrices $A^2 + B^2 = 2AB$, then prove that $p_A(x) = p_B(x)$

When does the following frobenius norm equality hold?

insert a matrix in-between product of vectors

Are there any solutions to $Ax=b$ satisfying $\Vert x \rVert=1$?

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