proof golfing in solutions of exercises 2 #9
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gares
reviewed
Dec 6, 2022
| (*D*)apply: (leq_trans (ltn_delta_root _)). | ||
| (*D*)apply: (leq_trans _ (leq_delta_root _)). | ||
| (*D*)by apply: leq_delta. | ||
| (*D*)case: ltngtP => //= [||rmn]; do ?by move=> /ltn_troot; case: ltngtP. |
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this reauires lesson 4 for the spec lemma
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Oh right... the proof is sooo much simpler with it 😥
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I think it may make sense to keep both, an say: after lesson 4 here it is.
Or move it, with the nice solution, to exercise4.
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