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misc

Truth tables: first columns : True/False values of the variables, such as p, q, or p' or ~p for inverse values. Next columns are logic combinations of the variables

p q p ⋂ q p ⋃ q p ⇒ q
T T T T T
T F F T F
F T F T T
F F F F T

p ⇒ q means condition p implies condition q. If p is true, then an implication can be drawn or not, depending on q. If p is false, then an implication cannot be ruled out, regardless of q, so it is left as true.

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