数学悖论作为悖论的一种，主要发生在数学研究中。
Mathematical paradox is a paradox, occurring mainly in mathematics study.
用一个特例说明了本方法在数学研究中的具体应用。
With a specific example, the application of this method is illustrated in mathematics researches.
讨论了清代使用的各种计算手段，指出清代数学家在数学研究中采用的计算手段和演算方法主要是笔算。
It is concluded that mathematicians formed and calculated mainly by means of written calculation with pen and paper in the Qing Dynasty.
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