fix escaping issue

2 years ago · 86f3e07b27
parent 3cbb4774f1
commit 86f3e07b27
1 changed files with 1 additions and 1 deletions
--- a/server/testgame/TestGame/Levels/Sum/L03_ArithSum.lean
+++ b/server/testgame/TestGame/Levels/Sum/L03_ArithSum.lean
@ -73,7 +73,7 @@ Hint (n : ℕ) (hn : 2 * ∑ i : Fin (n + 1), ↑i = n * (n + 1)) :
 Hint (n : ℕ) (hn : 2 * ∑ i : Fin (n + 1), ↑i = n * (n + 1)) :
  2 * (∑ x : Fin (n + 1), ↑x + (n + 1)) = Nat.succ n * (Nat.succ n + 1) =>
 "Um Die Induktionshypothese anzuwenden muss man noch
-$$2 \\cdot ((\\sum_{x=0}^n x) + (n + 1)) = 2 \\cdot \\sum_{x=0}^n x + 2 \\cdot (n + 1))$$
+$$2 \\cdot ((\\sum_\{x=0}^n x) + (n + 1)) = 2 \\cdot \\sum_\{x=0}^n x + 2 \\cdot (n + 1))$$
 umschreiben. Dazu kannst du `mul_add` benützen.
 "