timer Asked: Sep 20th, 2015

Question description

Hello. I have to prove the following by using Conditional Proof or CP. How would I go about that if my premise is (B -> ~C) -> D and my conclusion is B -> (~C -> D)? I'm not sure if any nested proofs will be involved. If nested proofs are involved my book shows that they use vertical bars when your assuming something. So like if you were to start at number 2 and assume something it would start off like |2. If there was another assumption at say number 4 it would start like ||4.  Thank you ever so much for your help.

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