leanprover / leanprover/fp-lean
[Typo] Exercise 2 in chapter 9 should be plusR_succ_left instead of plus_succ_left?
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- Dominant language
- Lean
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Description
The exercise states:
- Rewrite the proof of
plus_succ_leftto use<;>in a single line.
plus_succ_left doesn't appear anywhere else in the text, but plusR_succ_left does.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Open functional-programming-lean/src/tactics-induction-proofs.md at the exercise around line 283. Compare the exercise's plus_succ_left reference with the plusR_succ_left name used elsewhere in the text. Done means the exercise names the theorem consistently and the link remains valid.
Written by the indexing model from the issue text.
Assessment
- Domain
- documentation
- Issue type
- Documentation
- Difficulty
- 1/5
- Estimated time
- Under an hour
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 68/100