removed theorem nonempty_length_gt_one #5
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You can ignore all of the commits, except the last one (remove nonempty_length_gt_one, fixed length_gt_zer |
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Can you please add a TODO comment to the theorem to try to shorten the proof |
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theorem List.length_pos_iff
I found the theorem in mathlib that shows that 0<L.Length that is called List.length_pos_iff
I then tried to change the theorem that used it!
The mathlib theorem doesn't do exactly what you did in your theorem, but with a few extra lines of code you can get around it!