@[email protected] to No Stupid [email protected] • 10 months 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] • 10 months agomessage-square47fedilink
minus-squarepruwybenlinkfedilink10•10 months agoYou left out the “not” part - “If not pizza lunch, then not Tuesday” does indeed work.
minus-square@[email protected]linkfedilink9•edit-210 months 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•10 months 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.