leanprover-community / leanprover-community/physlib
Definition of a second
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Description
We should introduce the notion of a measurement along with an axiom.
Ideally this should take account of units but also allow us to work with things abstractly.
There was an attempt at defining a second at #488.
See also the discussion here.
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 by reviewing issue #488 and the linked Zulip discussion about defining a second. Determine the agreed abstraction for measurements, including unit-aware and abstract use, and specify the axiom that completes the new notion; done means that design is settled and formalized in the project.
Written by the indexing model from the issue text.
Assessment
- Domain
- tooling
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100