Propositional Logic: Translation, P4 (Conditionals)

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Propositional Logic: Translation, P4 (Conditionals)

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I don't get "reason 2" at 12:45 : I don't see the link between what you wrote and say and invalidity (for invalidity it will be required for the premisses to be true and the conclusion false, in our case the premisses are not all true, so where does invalidity appears ?) Could you explain please? By the way love your work :)

guilhemescudero
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At 12:55, it should read "If v(P->Q)=T when v(P)=F and v(Q)=T, then it will never be the case that v(P->Q)=T and v(P)=T and v(Q)=F." In the slide it says "v(P)=F and v(Q)=F". Thanks to a viewer in the comments for pointing this out!

LogicPhilosophy
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your lecture series is awesome!!! I was recently reviewing symbolic logic for a mathematics course and dude....did your lectures help. Concise and complete!! thanks a lot!!!

geez
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If I were a little smarter, then this would make sense to me. Hey I just wrote my own conditional!
Thanks for the material, I need to watch some more before it clicks, but I feel like I'm almost there 🙂

MisoMooch