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Kung Yao's user avatar
Kung Yao's user avatar
Kung Yao
  • Member for 4 years, 11 months
  • Last seen more than 2 years ago
  • Hong Kong
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Electrical engineer

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Top posts
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14
Spectrum of matrix involving quantum harmonic oscillator
Aug 15, 2021
12
Why is a dynamical system not a dynamic system? [closed]
Jul 29, 2020
10
Support of eigenvectors
Jun 10, 2022
9
Positive definiteness of matrix
Feb 3, 2020
9
Two-term recurrence relation
Feb 2, 2021
7
$\sum_{k =1, k \neq j}^{N-1} \csc^2\left(\pi \frac{k}{N} \right)\csc^2\left(\pi \frac{j-k}{N} \right)=?$
Jan 5, 2020
7
Is this operator bounded?
Mar 7, 2021
6
Matrix-valued ordinary differential equation with symmetry
Jun 15, 2021
4
Approximate constant function
Jan 14, 2020
4
Elliptic estimates for self-adjoint operators
Apr 6, 2020
Top network posts
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17
Showing $\frac{3\sqrt{3}}{2\pi}\sum_{z\in\Lambda}\frac1{1-\left(\frac{z}{\sqrt3}-1\right)^3}=1$, with $\Lambda$ a lattice
6
Inverse of structured block matrix
6
Electron in magnetic field
6
How to make a small $\varhexagon$ in latex?