number_field_elements_from_algebraics: Fix CyclotomicField embedding when embedding=False #38441
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Documentation preview for this PR (built with commit 6c56c15; changes) is ready! 🎉 |
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Something strange got merged into this PR: there are 3036 files changed with 80k+ lines of changes.... |
…when embedding=False
Co-authored-by: Travis Scrimshaw <clfrngrown@aol.com>
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Looks like the merge commit go wrong. Should be fixed now. (the |
roed314
reviewed
Nov 8, 2024
src/sage/rings/qqbar.py
Outdated
| From: Number Field in zeta6 with defining polynomial x^2 - x + 1 | ||
| To: Algebraic Field | ||
| Defn: zeta6 |--> 0.500000000000000? + 0.866025403784439?*I) | ||
| sage: _[0].coerce_embedding() |
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I'm surprised that the underscore would work here. Even if it does, I think it's clearer to give the return value explicit names.
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Looks good to me, other than the underscore comment. |
user202729
commented
Nov 8, 2024
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Looks good to me. |
roed314
approved these changes
Nov 8, 2024
vbraun
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to vbraun/sage
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this pull request
Nov 9, 2024
…icField embedding when embedding=False
Fixes sagemath#38440.
Uses `.coerce_embedding()` to determine the existence of the embedding
and modify the field accordingly, instead of doing what the code does
currently (assume the field is unembedded by default).
Note that there's a behavior change --- now when `embedding=False` it
will return a `NumberField` instead of `CyclotomicField` (even though it
is technically possible to create a `CyclotomicField(5,
embedding=None)`). I don't think this matters.
### 📝 Checklist
<!-- Put an `x` in all the boxes that apply. -->
- [x] The title is concise and informative.
- [x] The description explains in detail what this PR is about.
- [x] I have linked a relevant issue or discussion.
- [x] I have created tests covering the changes.
- [x] I have updated the documentation and checked the documentation
preview. (only part that change is https://doc-pr-38441--sagemath.netlif
y.app/html/en/reference/number_fields/sage/rings/qqbar.html#sage.rings.q
qbar.number_field_elements_from_algebraics )
URL: sagemath#38441
Reported by: user202729
Reviewer(s): roed314, Travis Scrimshaw, user202729
vbraun
pushed a commit
to vbraun/sage
that referenced
this pull request
Nov 13, 2024
…icField embedding when embedding=False
Fixes sagemath#38440.
Uses `.coerce_embedding()` to determine the existence of the embedding
and modify the field accordingly, instead of doing what the code does
currently (assume the field is unembedded by default).
Note that there's a behavior change --- now when `embedding=False` it
will return a `NumberField` instead of `CyclotomicField` (even though it
is technically possible to create a `CyclotomicField(5,
embedding=None)`). I don't think this matters.
### 📝 Checklist
<!-- Put an `x` in all the boxes that apply. -->
- [x] The title is concise and informative.
- [x] The description explains in detail what this PR is about.
- [x] I have linked a relevant issue or discussion.
- [x] I have created tests covering the changes.
- [x] I have updated the documentation and checked the documentation
preview. (only part that change is https://doc-pr-38441--sagemath.netlif
y.app/html/en/reference/number_fields/sage/rings/qqbar.html#sage.rings.q
qbar.number_field_elements_from_algebraics )
URL: sagemath#38441
Reported by: user202729
Reviewer(s): roed314, Travis Scrimshaw, user202729
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Fixes #38440.
Uses
.coerce_embedding()to determine the existence of the embedding and modify the field accordingly, instead of doing what the code does currently (assume the field is unembedded by default).Note that there's a behavior change --- now when
embedding=Falseit will return aNumberFieldinstead ofCyclotomicField(even though it is technically possible to create aCyclotomicField(5, embedding=None)). I don't think this matters.📝 Checklist