Combining Philosophers

Ideas for Herodotus, John Dewey and Achille Varzi

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4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / a. Axioms for sets

10653	Maybe set theory need not be well-founded [Varzi]
	Full Idea: There are some proposals for non-well-founded set theory (tolerating cases of self-membership and membership circularities).
	From: Achille Varzi (Mereology [2003], 2.1)
	A reaction: [He cites Aczel 1988, and Barwise and Moss 1996]