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[Merged by Bors] - refactor: Avoid Rat internals in the definition of Field #11639

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Soon, there will be NNRat analogs of the Rat fields in the definition of Field. NNRat is less nicely a structure than Rat, hence there is a need to reduce the dependency of Field on the internals of Rat.

This PR achieves this by restating Field.ratCast_mk' in terms of Rat.num, Rat.den. This requires fixing a few downstream instances.

Reduce the diff of #11203.


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Soon, there will be `NNRat` analogs of the `Rat` fields in the definition of `Field`. `NNRat` is less nicely a structure than `Rat`, hence there is a need to reduce the dependency of `Field` on the internals of `Rat`.

This PR achieves this by restating `Field.ratCast_mk'` in terms of `Rat.num`, `Rat.den`. This requires fixing a few downstream instances.

Reduce the diff of #11203.
@YaelDillies YaelDillies added awaiting-review The author would like community review of the PR t-algebra Algebra (groups, rings, fields etc) labels Mar 24, 2024
@leanprover-community-mathlib4-bot leanprover-community-mathlib4-bot added the merge-conflict The PR has a merge conflict with master, and needs manual merging. label Mar 30, 2024
@leanprover-community-mathlib4-bot leanprover-community-mathlib4-bot removed the merge-conflict The PR has a merge conflict with master, and needs manual merging. label Mar 31, 2024
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Thanks, LGTM.

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bors merge
bors d+

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mathlib-bors bot commented Apr 5, 2024

✌️ YaelDillies can now approve this pull request. To approve and merge a pull request, simply reply with bors r+. More detailed instructions are available here.

@github-actions github-actions bot added delegated ready-to-merge This PR has been sent to bors. and removed awaiting-review The author would like community review of the PR labels Apr 5, 2024
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mathlib-bors bot commented Apr 5, 2024

Canceled.

@leanprover-community-mathlib4-bot leanprover-community-mathlib4-bot added the merge-conflict The PR has a merge conflict with master, and needs manual merging. label Apr 5, 2024
@leanprover-community-mathlib4-bot leanprover-community-mathlib4-bot removed the merge-conflict The PR has a merge conflict with master, and needs manual merging. label Apr 6, 2024
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bors merge

mathlib-bors bot pushed a commit that referenced this pull request Apr 6, 2024
Soon, there will be `NNRat` analogs of the `Rat` fields in the definition of `Field`. `NNRat` is less nicely a structure than `Rat`, hence there is a need to reduce the dependency of `Field` on the internals of `Rat`.

This PR achieves this by restating `Field.ratCast_mk'` in terms of `Rat.num`, `Rat.den`. This requires fixing a few downstream instances.

Reduce the diff of #11203.




Co-authored-by: Floris van Doorn <fpvdoorn@gmail.com>
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mathlib-bors bot commented Apr 6, 2024

Pull request successfully merged into master.

Build succeeded:

@mathlib-bors mathlib-bors bot changed the title refactor: Avoid Rat internals in the definition of Field [Merged by Bors] - refactor: Avoid Rat internals in the definition of Field Apr 6, 2024
@mathlib-bors mathlib-bors bot closed this Apr 6, 2024
@mathlib-bors mathlib-bors bot deleted the field_no_rat_internals branch April 6, 2024 10:45
Louddy pushed a commit that referenced this pull request Apr 15, 2024
Soon, there will be `NNRat` analogs of the `Rat` fields in the definition of `Field`. `NNRat` is less nicely a structure than `Rat`, hence there is a need to reduce the dependency of `Field` on the internals of `Rat`.

This PR achieves this by restating `Field.ratCast_mk'` in terms of `Rat.num`, `Rat.den`. This requires fixing a few downstream instances.

Reduce the diff of #11203.




Co-authored-by: Floris van Doorn <fpvdoorn@gmail.com>
atarnoam pushed a commit that referenced this pull request Apr 16, 2024
Soon, there will be `NNRat` analogs of the `Rat` fields in the definition of `Field`. `NNRat` is less nicely a structure than `Rat`, hence there is a need to reduce the dependency of `Field` on the internals of `Rat`.

This PR achieves this by restating `Field.ratCast_mk'` in terms of `Rat.num`, `Rat.den`. This requires fixing a few downstream instances.

Reduce the diff of #11203.




Co-authored-by: Floris van Doorn <fpvdoorn@gmail.com>
uniwuni pushed a commit that referenced this pull request Apr 19, 2024
Soon, there will be `NNRat` analogs of the `Rat` fields in the definition of `Field`. `NNRat` is less nicely a structure than `Rat`, hence there is a need to reduce the dependency of `Field` on the internals of `Rat`.

This PR achieves this by restating `Field.ratCast_mk'` in terms of `Rat.num`, `Rat.den`. This requires fixing a few downstream instances.

Reduce the diff of #11203.




Co-authored-by: Floris van Doorn <fpvdoorn@gmail.com>
callesonne pushed a commit that referenced this pull request Apr 22, 2024
Soon, there will be `NNRat` analogs of the `Rat` fields in the definition of `Field`. `NNRat` is less nicely a structure than `Rat`, hence there is a need to reduce the dependency of `Field` on the internals of `Rat`.

This PR achieves this by restating `Field.ratCast_mk'` in terms of `Rat.num`, `Rat.den`. This requires fixing a few downstream instances.

Reduce the diff of #11203.




Co-authored-by: Floris van Doorn <fpvdoorn@gmail.com>
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