Fix typo in meta-implication rule #8
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IIRC, this was intentional, because you can prove A |- A but not A |- B lol |
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oh, I see. I guess the text above is confusing here (because it does talk about B), so I thought it was the general rule you wanted to show. Anyway, thanks for the comment (and the tutorial), happy to close the PR if it should just stay so! |
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