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Knowledge. If you would like to support the project, please visit the project page, where you can get more details on how you can help, and where you can join the
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214:: "formal proof." If anyone can improve on this, that would be much appreciated (if seen fit). As it stands, it appears fine for now.
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The conclusion ∼ C was deduced on line 8. Together with the assumption A → B in line 3, this proves the conditional (A → B) → C.
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I feel the example given is too similar to syllogism and thus slightly confusing. A better example is as follows, from
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http://marauder.millersville.edu/~bikenaga/mathproof/condproof/condproof.pdf
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A → B (conditional proof assumption, "Suppose "If A, then B" is true")
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324:(A → B)→ ~C (Conditional Proof, based on lines 3 and 8)
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