A +A' = 1 A . A' =0

O + A = A 1 . A = A

A + A = A A . A = A

A + B = B + A A . B = B . A

A + ( B + C ) = ( A + B ) + C = A + B + C A . ( B . C ) = ( A . B ) . C = A . B . C

A + B . C = ( A + B ) . ( A + C ) A . ( B + C ) = A . B + A . C

A + A . B = A A . ( A + B ) = A

( A + B )' = A' . B' ( A . B )' =A' + B'

( A' )' = A