| http://www.w3.org/ns/prov#value | - set theory set theory Printable View January 3rd 2007, 01:51 PM ruprotein set theory Prove the following demorgans law: if A, B, U are sets such that A is a subset of U and B is a subset of U, then U - (A union B) = (U-A) intersection (U-B) January 3rd 2007, 03:35 PM OReilly Quote:
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