@[email protected] to No Stupid [email protected] • 1 year agoIs "If A then B" equal to "B if and only if A"?message-square47fedilinkarrow-up151
arrow-up141message-squareIs "If A then B" equal to "B if and only if A"?@[email protected] to No Stupid [email protected] • 1 year agomessage-square47fedilink
minus-squarepruwybenlinkfedilink10•1 year agoYou left out the “not” part - “If not pizza lunch, then not Tuesday” does indeed work.
minus-square@[email protected]linkfedilink9•edit-21 year agoYa wrong. If Tuesday, then pizza. And, if Friday, then pizza. The contrapositive : if not pizza, then not Tuesday and not Friday. What day is it? We’re not having pizza. So it’s not Tuesday or Friday. Google contrapositives then holla back
minus-squareKogasalinkfedilink5•1 year agoUsing standard definitions from propositional logic they are equivalent.
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You left out the “not” part - “If not pizza lunch, then not Tuesday” does indeed work.
Ya wrong.
If Tuesday, then pizza. And, if Friday, then pizza.
The contrapositive : if not pizza, then not Tuesday and not Friday.
What day is it? We’re not having pizza. So it’s not Tuesday or Friday.
Google contrapositives then holla back
Removed by mod
Using standard definitions from propositional logic they are equivalent.