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i863398
Posts:
1
From:
usa
Registered:
4/13/07


some questions about the abstract algerbra(boolean algerbra and lattice)
Posted:
Apr 13, 2007 9:11 PM


1 Consider an arbitrary lattice (A,?) . Prove or disprove: 1. a ?c => a?(b?c) = (a?b)?c 2. a?(b?c)?(a?b)?(a?c)
2 Let (B,?) be a Boolean lattice. Prove that a,b?B and a function f : B>B exist such that
(?x,y:x,y?B:x?y=(x?f.y = b))
How to do these two exercise .
I really appricate your help



