Recent content by ozymandris

  1. O

    Undergrad Set Theory Proof(Using Identities)

    (A ∩ B') U (A' U A) ∩ B (A ∩ B') U {Universal} ∩ B (A ∩ B') U B if i distribute from this (A U B ) ∩ (B' U B) A U B
  2. O

    Undergrad Set Theory Proof(Using Identities)

    A' U A = \varnothing
  3. O

    Undergrad Set Theory Proof(Using Identities)

    ok, i think I've gotten it. It took me nearly a page of workout. I'll post it when i have a minute to type it all in.
  4. O

    Undergrad Set Theory Proof(Using Identities)

    (A' ∩ B) U (A ∩ B) = (A' U A) ∩ B We're allowed all the normal set axioms, distributivity, deMorgan, etc etc
  5. O

    Undergrad Set Theory Proof(Using Identities)

    Hi, I've been trying for 3 hours to solve this proof using identities. I can't seem to get it. Can i get a little help please? Prove: A U B = (A ∩ B') U (A' ∩ B) U (A ∩ B) thanks