Taylor 发表于 2025-3-21 18:14:44
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http://reply.papertrans.cn/16/1534/153331/153331_2.png蚊子 发表于 2025-3-22 01:31:11
,Numbers—in which we abandon logic to achieve understanding, then use logic to deepen understanding, probably of very minor importance initially, being no more than labels to distinguish the verses of ‘one, two, buckle my shoe’, etc. Then they began to have relationships with one another— ‘one’ for some reason always came before ‘two’; and relationships with the outside world— ‘one’, ‘two’, ‘three生意行为 发表于 2025-3-22 05:39:32
,The Real Numbers—in which we find holes in the number line and pay the price for repairs,t takes to get there. What we now need is a working definition of the set ℚ of rational numbers and a specific interpretation or model of them. Both are easy: the model is the familiar number line in which the rational number . is represented as a distance . along the line from 0, to the left or rig侵略者 发表于 2025-3-22 10:01:16
,Permutations—in which ALICE is transformed,, you lose nothing by skipping this chapter. If at some stage (and exactly which stage doesn’t really matter) you tackle it, we hope you will gain from it an appreciation that many of the concepts discussed in the main stream with reference to numbers are really of much wider applicability. The conc假 发表于 2025-3-22 14:58:50
http://reply.papertrans.cn/16/1534/153331/153331_6.png是贪求 发表于 2025-3-22 17:23:52
,Some Infinite Surprises—in which some wild sets are tamed, and some nearly escape, (1845–1918). Unlike many, perhaps most, major theories in mathematics, Cantor’s ideas on infinite sets owe little to foundations built over previous centuries by other mathematicians. He was the source of most of the ideas, and for this reason the subject is relatively easy to tie down to its origi忘恩负义的人 发表于 2025-3-22 22:21:49
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