数更多的数学集合中的一元，如负整数或实数，通过归纳正整数而得出。
A member of any of the further sets of mathematical objects, such as negative integers and real Numbers, that can be derived from the positive integers by induction.
他建议，比如将孩子们集合到一个团队中就某一问题展开辩论，可以让他们更轻松地掌握数学或哲学中的抽象问题。
He suggests, for example, that children may have an easier time learning abstract topics in mathematics or physics if they are put into a group and allowed to reason through a problem together.
然而，就像数学中的“集合”的感念，人类学中“文化”的概念是一个抽象的概念，它使大量的具体研究和理解成为可能。
Thus, the anthropological concept of "culture, " like the concept of "set" in mathematics, is an abstract concept which makes possible immense amounts of concrete research and understanding.
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