[Merged by Bors] - feat(RingTheory): classification of etale algebras over fields #20324

erdOne · 2024-12-29T14:34:47Z

github-actions · 2024-12-29T14:35:36Z

PR summary 4365b38f5a

Import changes for modified files

Dependency changes

File	Base Count	Head Count	Change
Mathlib.RingTheory.Etale.Field	1898	1902	+4 (+0.21%)

Import changes for all files

Files	Import difference
`Mathlib.RingTheory.Etale.Field`	4
`Mathlib.RingTheory.Etale.Pi` (new file)	1453

Declarations diff

+ Algebra.Etale.iff_exists_algEquiv_prod
+ iff_exists_algEquiv_prod
+ instance [Finite I] [∀ i, FormallyEtale R (A i)] : FormallyEtale R (Π i, A i)
+ instance [Finite I] [∀ i, FormallySmooth R (A i)] : FormallySmooth R (Π i, A i)
+ instance [∀ i, FormallyUnramified R (f i)] : FormallyUnramified R (Π i, f i)
+ pi_iff

You can run this locally as follows

## summary with just the declaration names:
./scripts/declarations_diff.sh <optional_commit>

## more verbose report:
./scripts/declarations_diff.sh long <optional_commit>

The doc-module for script/declarations_diff.sh contains some details about this script.

No changes to technical debt.

You can run this locally as

./scripts/technical-debt-metrics.sh pr_summary

The relative value is the weighted sum of the differences with weight given by the inverse of the current value of the statistic.
The absolute value is the relative value divided by the total sum of the inverses of the current values (i.e. the weighted average of the differences).

Mathlib/RingTheory/Etale/Field.lean

Mathlib/RingTheory/Etale/Pi.lean

chrisflav

Thanks!

maintainer delegate

Mathlib/RingTheory/Etale/Field.lean

github-actions · 2025-01-06T13:14:40Z

🚀 Pull request has been placed on the maintainer queue by chrisflav.

jcommelin

Thanks!

bors d+

jcommelin · 2025-01-06T13:49:01Z

Mathlib/RingTheory/Etale/Pi.lean

+theorem pi_iff [Finite I] :
+    FormallyEtale R (Π i, A i) ↔ ∀ i, FormallyEtale R (A i) := by


Is the backwards direction also an instance already?

mathlib-bors · 2025-01-06T13:49:09Z

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

Co-authored-by: Christian Merten <[email protected]>

erdOne · 2025-01-06T14:27:07Z

Thanks

bors merge

Co-authored-by: Andrew Yang <[email protected]>

mathlib-bors · 2025-01-06T14:36:08Z

Pull request successfully merged into master.

Build succeeded:

* origin/master: (189 commits) chore(Algebra): make more names consistent (#20449) feat: Polynomial FLT (#18882) feat: A disjoint union is finite iff all sets are finite, and all but finitely many are empty (#20457) fix: linkfix in 100.yaml (#20517) feat(1000): fill in more entries (#20470) feat(Combinatorics/SimpleGraph/Walk): add `penultimate` and `snd` (#16769) feat(ContinuousMultilinearMap): add lemmas about `.prod` (#20462) feat(RingTheory): classification of etale algebras over fields (#20324) fix: Allow multiple builds on staging branch (#20515) feat(CategoryTheory/Shift/Adjunction): properties of `Adjunction.CommShift` (#20337) chore(Data/Multiset/Basic): move the `sub`, `union`, `inter` sections lower (#19863) chore(Topology/UniformSpace/Completion): make coe' argument implicit (#20514) refactor(Algebra/Category/Grp/Colimits): change the construction of colimits in `AddCommGrp` (#20474) feat(Topology/Algebra/InfiniteSum/NatInt): Add pnat lems (#16544) chore(RingTheory/Finiteness): rename Module.Finite.out (#20506) refactor(CategoryTheory/Limits/Preserves/Ulift): simplify the proof that the universe lifting functor for types preserves all colimits (#20508) feat(CategoryTheory): products in the category of Ind-objects (#20507) chore: remove >9 month old deprecations (#20505) chore(FieldTheory/Galois): small cleanup (#20217) chore(LinearIndependent): generalize to semirings (#20480) chore(NumberTheory/NumberField/AdeleRing): refactor adele rings (#20500) chore: replace `aesop` with `simp` where possible (#20483) chore(1000): remove nonexistent fields (#20493) chore(CategoryTheory/Adjunction.Basic, CategoryTheory/Equivalence): change definition of `Adjunction.comp` and `Equivalence.trans` (#20490) feat(Asymptotics): add `Asymptotics.*.*Prod` lemmas (#20458) feat: a conditional kernel is almost everywhere a probability measure (#20430) feat: if `f` is a measurable group hom, then every point has a neighborhood `s` such that `f '' s` is bounded (#20304) feat: `Ico`, `Ioc`, and `Ioo` are not closed or compact (#20479) chore: drop redundant hypothesis in `Module.Dual.eq_of_preReflection_mapsTo` (#20492) feat(FaaDiBruno): derive `DecidableEq` (#20482) chore(SetTheory/Ordinal/Basic): `{x // x < y}` → `Iio y` (#20413) chore: generalize `FormalMultilinearSeries.ofScalars_norm` to `Seminormed` (#20351) chore(MvPolynomial/Localization): golf using TensorProduct (#20309) chore(Combinatorics/Enumerative/Partition): auto-derive DecidableEq (#20277) chore(CategoryTheory): make relevant parameters explicit in `Arrow.homMk`. (#20259) feat: add `IsStarNormal (↑x⁻¹ : R)` instance for `x : Rˣ` (#20091) fix: Stop cancelling builds of master (#20435) chore: update Mathlib dependencies 2025-01-05 (#20485) feat(SetTheory/Cardinal/Arithmetic): miscellaneous cardinality lemmas (#18933) chore: bump toolchain to v4.16.0-rc1, and merge bump/v4.16.0 (#20464) chore: bot validates lean-toolchain on bump/v4.X.0 branches (#20478) feat: shorthand lemmas for the L1 norm (#20383) chore: remove unnecessary adaptation notes (#20467) chore(Algebra/Category/MonCat/Colimits): remove smallness condition (#20473) chore(SetTheory/Ordinal/Arithmetic): `IsLeftCancelAdd Ordinal` (#19888) feat(Algebra): more on `OrthogonalIdempotents` (#18195) feat(Radical): `(radical a).natDegree ≤ a.natDegree` (#20468) feat(Polynomial): `(a^n)' = 0` iff `a' = 0` when `n` doesn't divide the characteristic (#20190) feat(Algebra/Lie): add Lie's theorem (#13480) chore(RingTheory/Generators): make algebra instance a def (#14265) ...

erdOne added 2 commits December 29, 2024 14:34

feat(RingTheory): classification of etale algebras over fields

db5cb59

oopes

9b3eca8

github-actions bot added the t-algebra Algebra (groups, rings, fields, etc) label Dec 29, 2024

alreadydone reviewed Dec 29, 2024

View reviewed changes

Mathlib/RingTheory/Etale/Field.lean Show resolved Hide resolved

Mathlib/RingTheory/Etale/Field.lean Outdated Show resolved Hide resolved

Mathlib/RingTheory/Etale/Field.lean Show resolved Hide resolved

change to étale

12b8f4d

chrisflav reviewed Jan 6, 2025

View reviewed changes

Mathlib/RingTheory/Etale/Pi.lean Outdated Show resolved Hide resolved

chrisflav approved these changes Jan 6, 2025

View reviewed changes

Mathlib/RingTheory/Etale/Field.lean Outdated Show resolved Hide resolved

github-actions bot added the maintainer-merge label Jan 6, 2025

jcommelin reviewed Jan 6, 2025

View reviewed changes

leanprover-community-mathlib4-bot added the delegated label Jan 6, 2025

erdOne and others added 3 commits January 6, 2025 13:53

Update Mathlib/RingTheory/Etale/Pi.lean

73ddf68

Co-authored-by: Christian Merten <[email protected]>

Update Mathlib/RingTheory/Etale/Field.lean

4af89a0

Co-authored-by: Christian Merten <[email protected]>

Add instances

4365b38

mathlib-bors bot pushed a commit that referenced this pull request Jan 6, 2025

feat(RingTheory): classification of etale algebras over fields (#20324)

d5cc7c8

Co-authored-by: Andrew Yang <[email protected]>

mathlib-bors bot changed the title ~~feat(RingTheory): classification of etale algebras over fields~~ [Merged by Bors] - feat(RingTheory): classification of etale algebras over fields Jan 6, 2025

mathlib-bors bot closed this Jan 6, 2025

mathlib-bors bot deleted the erd1/etaleField2 branch January 6, 2025 14:36

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

[Merged by Bors] - feat(RingTheory): classification of etale algebras over fields #20324

[Merged by Bors] - feat(RingTheory): classification of etale algebras over fields #20324

erdOne commented Dec 29, 2024

github-actions bot commented Dec 29, 2024 •

edited

Loading

Import changes for modified files

Declarations diff

chrisflav left a comment

github-actions bot commented Jan 6, 2025

jcommelin left a comment

jcommelin Jan 6, 2025

mathlib-bors bot commented Jan 6, 2025

erdOne commented Jan 6, 2025

mathlib-bors bot commented Jan 6, 2025

		theorem pi_iff [Finite I] :
		FormallyEtale R (Π i, A i) ↔ ∀ i, FormallyEtale R (A i) := by

[Merged by Bors] - feat(RingTheory): classification of etale algebras over fields #20324

[Merged by Bors] - feat(RingTheory): classification of etale algebras over fields #20324

Conversation

erdOne commented Dec 29, 2024

github-actions bot commented Dec 29, 2024 • edited Loading

PR summary 4365b38f5a

Import changes for modified files

Declarations diff

chrisflav left a comment

Choose a reason for hiding this comment

github-actions bot commented Jan 6, 2025

jcommelin left a comment

Choose a reason for hiding this comment

jcommelin Jan 6, 2025

Choose a reason for hiding this comment

mathlib-bors bot commented Jan 6, 2025

erdOne commented Jan 6, 2025

mathlib-bors bot commented Jan 6, 2025

github-actions bot commented Dec 29, 2024 •

edited

Loading