A hallucination is a fact, not an error; what is erroneous is a judgment based upon it.

幻觉不是你的错，在幻觉中做决定，这就是你的不对了。

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However, this study should be based on the fact that the series must have consistent convergence, the judgment of which is rather difficult.

对于函数级数，研究其和函数的解析性质很重要，但函数级数必须具有一致收敛性，而判断函数级数的一致收敛性往往是比较困难的。

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