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Alf
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91
Geometric interpretation for complex eigenvectors of a 2×2 rotation matrix
36
Why is 有 (yǒu) the only verb that requires 没 while other verbs can use 不?
33
Best books in the genre "______ for Mathematicians"
32
What's the difference between 学 and 学习?
28
Why do we need to prove $e^{u+v} = e^ue^v$?