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Fix quoting

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This commit is contained in:
Ughur Alakbarov
2024-06-29 12:37:32 +02:00
committed by GitHub
parent 3e9657d258
commit 0d828eda14
1 changed files with 2 additions and 2 deletions
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4
Game/Levels/AdvMultiplication/L09mul_left_cancel.lean
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@@ -23,8 +23,8 @@ the hypothesis is `a * d = a * c → d = c` but what we know is `a * succ d = a
so the induction hypothesis does not apply!
Assume `a ≠ 0` is fixed. The actual statement we want to prove by induction on `b` is
\"for all `c`, if `a * b = a * c` then `b = c`. This *can* be proved by induction,
because we now have the flexibility to change `c`.\"
\"for all `c`, if `a * b = a * c` then `b = c`\". This *can* be proved by induction,
because we now have the flexibility to change `c`.
"
Statement mul_left_cancel (a b c : ℕ) (ha : a ≠ 0) (h : a * b = a * c) : b = c := by