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Mathematics 14 Online
OpenStudy (anonymous):

Let Δ be a set of sentences. Let ϕ be a sentence. If Δ⊢Mendelson ϕ, then it must be the case that Δ⊢Fitch ϕ.

OpenStudy (experimentx):

??

OpenStudy (anonymous):

It is a true/false question

OpenStudy (experimentx):

what does it mean?? "Δ⊢Mendelson ϕ" ??

OpenStudy (anonymous):

I believe it is one of the unsatisfiability proofs. It is for intro to logic.

OpenStudy (experimentx):

I haven't heard terms like "⊢Fitch " and "⊢Mendelson "

OpenStudy (anonymous):

I believe those are just random names added in. The symbol should look like the rotated L

OpenStudy (experimentx):

I don't think i can answer question of yours ... :( sorry!!

OpenStudy (anonymous):

No worries

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