8 March 2009
- 08:4108:41, 8 March 2009 diff hist +2 m Set →Cardinality of a set
- 08:3808:38, 8 March 2009 diff hist +406 Set →Cardinality of a set
7 March 2009
- 13:3213:32, 7 March 2009 diff hist −25 Set theory change first para
24 February 2009
- 13:5013:50, 24 February 2009 diff hist +2 Countable set that should be in the first person
- 13:4313:43, 24 February 2009 diff hist +2 Countable set No edit summary
- 13:4213:42, 24 February 2009 diff hist +265 Countable set made it simpler. Hope I didn't remove too much precision.
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