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Representation theory provides the language in which many number-theoretic phenomena can be expressed.
我不害怕站出来。每个人都来握住我的手。我们将一起走过这条路,穿越风暴。无论什么天气,寒冷或温暖。只想让你知道,你并不孤单。
Both incentives and punishments elicit powerful responses.