User Kung Yao - MathOverflow Meta

Kung Yao

Member for 5 years
Last seen more than 3 years ago

Hong Kong

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Electrical engineer

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May 21, 2022

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Feb 1, 2020
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Feb 1, 2020

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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

14

Spectrum of matrix involving quantum harmonic oscillator

10

Support of eigenvectors

9

Positive definiteness of matrix

9

Two-term recurrence relation