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前言罗素的集合演算(其内容包括[1]的*20、*22和*24)在经朗厄的[2]予以改进之后,有别于当前中学数学中集合知识的仅在于其论述的深刻性和系统性.从这方面看,它迥异于现今流行的公理集合论,后者排除了中学数学所承认的全集(参阅[3]).
Preface Russell’s set calculus (its contents include *20, *22, and *24 of [1]) were improved by Lange’s [2]. This is different from the current middle school mathematics. Sexuality and systematism. From this perspective, it is very different from the current popular axiom set theory, which excludes the full set of secondary school mathematics recognition (see [3]).