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Wild 'Sets' - Printable Version

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Wild 'Sets' - elim - 10-18-2010 03:25 PM

(1) $\beta=\{x \mid x \; \text{contains at least 10 elements}\}\;$ ($\beta \in \beta$)
(2) $ b = \{x \mid x \notin x\} $ (1902 Russell $b \in b \Leftrightarrow b \notin b$)