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Quine atoms (named after Willard Van Orman Quine) are sets that only contain themselves, that is, sets that satisfy the formula x = {x}.It is not that incoherent. It can be done in programming. Here in
https://en.wikipedia.org/wiki/Urelement#Quine_atoms
Wrongo. This is exactly isomorphic to the incoherent notion of a
can of soup so totally containing itself that it has no outside
boundary.
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