Saturday, June 6, 2009

Biconditional (or Bi implication)


Biconditional (or Bi implication):
The biconditional connective <=> (read as IF AND ONLY IF) is defined by the following truth table.
Note: If p and q have the same truth value, the biconditional p <=> q is true; if p and q have opposite truth values then
p <=> q is false.

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