Qiaochu_Yuan comments on Can infinite quantities exist? A philosophical approach - Less Wrong

-9 Post author: metaphysicist 03 January 2013 10:52PM

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Comment author: Qiaochu_Yuan 04 January 2013 01:43:49AM *  0 points [-]

Another mathematical point is that mathematical models involving infinite things can sometimes be shown to be equivalent to mathematical models involving only finite things. Terence Tao has written extensively on this; see, for example, this blog post. So quibbling about infinities is very much quibbling about properties of the map, not properties of the territory.