-
Notifications
You must be signed in to change notification settings - Fork 265
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
[Merged by Bors] - feat: Add some equivalent characterisations of primitive elements in finite extensions of fields #8609
Closed
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
jcommelin
reviewed
Dec 4, 2023
jcommelin
reviewed
Dec 4, 2023
acmepjz
reviewed
Dec 5, 2023
acmepjz
reviewed
Dec 7, 2023
riccardobrasca
approved these changes
Dec 7, 2023
Thanks! bors d+ |
✌️ xroblot can now approve this pull request. To approve and merge a pull request, simply reply with |
bors r+ |
mathlib-bors bot
pushed a commit
that referenced
this pull request
Dec 10, 2023
…finite extensions of fields (#8609) See the [Zulip thread](https://leanprover.zulipchat.com/#narrow/stream/217875-Is-there-code-for-X.3F/topic/Characterization.20of.20primitive.20elements.20in.20field.20extensions/near/403369086)
Pull request successfully merged into master. Build succeeded: |
alreadydone
added a commit
that referenced
this pull request
Dec 11, 2023
mathlib-bors bot
pushed a commit
that referenced
this pull request
Dec 11, 2023
+ generalize `image_rootSet`, `adjoin_rootSet_eq_range` and `splits_comp_of_splits` in Data/Polynomial/Splits and use the last one to golf `splits_of_algHom`, `splits_of_isScalarTower` (introduced in # 8609). + add three new lemmas `mem_range_x_of_minpoly_splits` to simplify the construction of `IntermediateField.algHomEquivAlgHomOfIsAlgClosed` and `Algebra.IsAlgebraic.algHomEquivAlgHomOfIsAlgClosed`, remove the `IsAlgClosed` condition and rename. ~~They could be moved to an earlier file but I refrain from doing that. (#find_home says it's already in the right place)~~ + golf `primitive_element_iff_algHom_eq_of_eval` from # 8609, using a new lemma `IsIntegral.minpoly_splits_tower_top` for the last step. + make `integralClosure_algEquiv_restrict` (from # 8714) computable and rename to `AlgEquiv.mapIntegralClosure` to follow camelCase naming convention and enable dot notation. Co-authored-by: Xavier-François Roblot <46200072+xroblot@users.noreply.github.com> Co-authored-by: Junyan Xu <junyanxu.math@gmail.com>
awueth
pushed a commit
that referenced
this pull request
Dec 19, 2023
…finite extensions of fields (#8609) See the [Zulip thread](https://leanprover.zulipchat.com/#narrow/stream/217875-Is-there-code-for-X.3F/topic/Characterization.20of.20primitive.20elements.20in.20field.20extensions/near/403369086)
awueth
pushed a commit
that referenced
this pull request
Dec 19, 2023
+ generalize `image_rootSet`, `adjoin_rootSet_eq_range` and `splits_comp_of_splits` in Data/Polynomial/Splits and use the last one to golf `splits_of_algHom`, `splits_of_isScalarTower` (introduced in # 8609). + add three new lemmas `mem_range_x_of_minpoly_splits` to simplify the construction of `IntermediateField.algHomEquivAlgHomOfIsAlgClosed` and `Algebra.IsAlgebraic.algHomEquivAlgHomOfIsAlgClosed`, remove the `IsAlgClosed` condition and rename. ~~They could be moved to an earlier file but I refrain from doing that. (#find_home says it's already in the right place)~~ + golf `primitive_element_iff_algHom_eq_of_eval` from # 8609, using a new lemma `IsIntegral.minpoly_splits_tower_top` for the last step. + make `integralClosure_algEquiv_restrict` (from # 8714) computable and rename to `AlgEquiv.mapIntegralClosure` to follow camelCase naming convention and enable dot notation. Co-authored-by: Xavier-François Roblot <46200072+xroblot@users.noreply.github.com> Co-authored-by: Junyan Xu <junyanxu.math@gmail.com>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
See the Zulip thread