leanprover-community / leanprover-community/physlib
API: Time Manifold
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- Dominant language
- Lean
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- 750
- Forks
- 191
- Avg merge
- 1d 21h
- Merged PRs (30d)
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Description
Details
Key data structure
The type corresponding to the manifold underlying time. Note that this is not the same as Time which is commonly used in physics.
- is defined
Need
This manifold is of use in topological field theory, where one does not have a metric on the world-volume. It also can be used to give a precise notion to the meaning of the time unit.
Requirements
- The API shall contain an instance of a manifold on the type
Corresponding file system
https://github.com/HEPLean/PhysLean/tree/master/PhysLean/SpaceAndTime/Time
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 reading the files under PhysLean/SpaceAndTime/Time and identify the type representing the time manifold. Check how manifold instances are represented elsewhere in the project, then determine the required API instance for this type. Done means the time manifold has the requested instance and the project checks successfully.
Written by the indexing model from the issue text.
Assessment
- Domain
- backend-api-design
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100