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~A
opposite
A (and) B
conjunction
both have to be T to be T
A v B
disjunction
both have to be F to be F
A (side ways u) B
if A then B
conditional
TF=F
A (three lines) B
A if and only if B
biconditional
have to be the same to be T
Vaild because
every valuation with true premises has a true conclusion
invalid because
every valuation with true premises does not have true conclusions
Author
Anonymous
ID
10698
Card Set
PHL-ash
Description
PHL exam 3
Updated
2010-03-15T23:56:39Z
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