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Mathematics
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Nyquist-er
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4
Proving that a complicated complex expotential is periodic or not.
Dec 4, 2023
3
What does it mean for a matrix $A$ to have only real eigenvalues?
Jul 13, 2022
2
How to prove that $P(A) P(B)=P(A \cap B) P(A \cup B)+P\left(A \cap B^{\prime}\right) P\left(B \cap A^{\prime}\right)$
Oct 17, 2023
1
Does there exist a structuring element B such that $X \oplus B \supseteq X \ominus B$ isn't true?
Sep 25, 2022
1
Proving that the norm $n \|A\|_{l_\infty}$ is a matrix norm.
May 16, 2023
1
When a function $f$ is strictly increasing
Jun 16, 2023
1
Chain rule for vector by vector derivative
Jun 28, 2023
0
Does every non-square matrix have both a left inverse and a right inverse matrix?
Sep 30, 2022
0
On the derivative of $\mathbf{A}\mathbf{x}$ w.r.t the vector $\mathbf{x}$, where $\mathbf{A}$ is a matrix, but without using entry-wise derivatives.
Jan 28, 2023
0
Gradient of $ \left( \mathbf{w}^T \mathbf{x} \right)^2 - 2\mathbf{w}^T \mathbf{x}$ w.r.t $\mathbf{w}$
Jan 31, 2023