From 4a55822bbb4d52a91ca222f7b045cbe53379be76 Mon Sep 17 00:00:00 2001 From: Jon Eugster Date: Sun, 24 Mar 2024 12:22:24 +0100 Subject: [PATCH] typo #57 --- Game/Levels/Multiplication/L07mul_add.lean | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Game/Levels/Multiplication/L07mul_add.lean b/Game/Levels/Multiplication/L07mul_add.lean index e2db4e7..5303ffe 100644 --- a/Game/Levels/Multiplication/L07mul_add.lean +++ b/Game/Levels/Multiplication/L07mul_add.lean @@ -11,7 +11,7 @@ Introduction Our next goal is \"left and right distributivity\", meaning $a(b+c)=ab+ac$ and $(b+c)a=ba+ca$. Rather than these slightly pompous names, the name of the proofs -of the proof in Lean are descriptive. Let's start with +in Lean are descriptive. Let's start with `mul_add a b c`, the proof of `a * (b + c) = a * b + a * c`. Note that the left hand side contains a multiplication and then an addition.