Wikipedia talk:Miscellany for deletion/Wikipedia:WikiProject Containers

Something to consider while debating this Mfd
David in DC (talk) 04:15, 19 September 2013 (UTC)

Something else to consider - Russell's paradox as it relates to containers
According to naive set theory, any definable collection is a set. Start out with the notion that "R" is the set of all sets that are not members of themselves. If "R" is not a member of Set R, then its definition dictates that it must contain itself, and if it contains itself, then it contradicts its own definition as the set of all sets that are not members of themselves. This contradiction is [Bertrand] Russell's paradox. Symbolically:


 * $$\text{let } R = \{ x \mid x \not \in x \} \text{, then } R \in R \iff R \not \in R$$

Any WikiProject on containers should cover the container that's central to Russell's paradox. David in DC (talk) 19:40, 19 September 2013 (UTC)