leanprover / leanprover/fp-lean
The discussion of unfoldability in ch1 is overwhelming
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Description
Please quote the text that is overwhelming:
Behind the scenes, some definitions are internally marked as being unfoldable during overload resolution, while others are not. Definitions that are to be unfolded are called reducible. Control over reducibility is essential to allow Lean to scale: fully unfolding all definitions can result in very large types that are slow for a machine to process and difficult for users to understand. Definitions produced with abbrev are marked as reducible.
As pointed out by Shriram here, this text is way too much. It needs to be reduced in complexity and assumed background.
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
Start with the discussion of unfoldability in chapter 1 and read the quoted passage alongside the linked Shriram comment. Simplify the explanation by reducing its complexity and assumed background, then verify that the revised discussion remains understandable to readers new to Lean.
Written by the indexing model from the issue text.
Assessment
- Domain
- documentation
- Issue type
- Documentation
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100