确界原理 supremum and infimum principle 戴德金定理 Dedekind theorem

确界原理  supremum and infimum principle  戴德金定理  Dedekind theorem  

http://www.math.ubc.ca/~cass/courses/m446-05b/dedekind-book.pdf#page=15

continulity and irrational numbers
the nature and meaning of numbers

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原文地址：https://www.cnblogs.com/rsapaper/p/10634826.html