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Corrections for pigeonhole principle
1. box principle box principle by Wkbj79 on 2003-03-14 01:54:24 (accepted) (3)
2. perhaps $n$ should "set with cardinality $n$"? by saforres on 2002-07-06 17:39:56 (rejected)
3. synonyms by drini on 2002-05-30 21:45:36 (accepted)

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