Talk:Class

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i missed it. - what's your difference between class, category & set? - an arbitrary designation or historical? tpk (talk) 17:24, 25 March 2019 (UTC)

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I could have sworn I've heard mention of a category containing categories...

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No, but there's a category consisting of all small categories. A category is small if it is built on sets, not classes. --AxelBoldt

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Is the military definition of the word actually specific to submarines? -Smack 18:57 30 Jun 2003 (UTC)