leanprover / theorem_proving_in_lean

Theorem proving in Lean
Apache License 2.0
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fix typo in inductive type tutorial #68

Closed marcusklaas closed 5 years ago

marcusklaas commented 5 years ago

I am very new to lean, so I hope this is right. The usage of α and β seem to be swapped at this particular line. Very good documentation btw, I've learned a lot!

avigad commented 5 years ago

Good catch! I'll add the word "also", since the net result is that alpha and beta are both implicit in both constructors. Thanks for the fix and for the kind words.