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Minor refactor for is_exact #39137

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@user202729 user202729 commented Dec 16, 2024

The method is unnecessarily duplicated, which this pull request removes.

Besides, it wasn't originally correctly implemented for modules and matrix spaces. Fixed now.

Side note: technically a matrix space over R is a (usually noncommutative) R-algebra, which is in turn a R-module. Yet MatrixSpace doesn't inherit from Module?

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  • The title is concise and informative.
  • The description explains in detail what this PR is about.
  • I have created tests covering the changes.
  • I have updated the documentation and checked the documentation preview.

⌛ Dependencies

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github-actions bot commented Dec 16, 2024

Documentation preview for this PR (built with commit 06bd6f4; changes) is ready! 🎉
This preview will update shortly after each push to this PR.

@user202729 user202729 mentioned this pull request Dec 27, 2024
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looks interesting, No time to double check now.

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ok, thanks

vbraun pushed a commit to vbraun/sage that referenced this pull request Jan 29, 2025
    
The method is unnecessarily duplicated, which this pull request removes.

Besides, it wasn't originally correctly implemented for modules and
matrix spaces. Fixed now.

Side note: technically a matrix space over R is a (usually
noncommutative) R-algebra, which is in turn a R-module. Yet MatrixSpace
doesn't inherit from Module?

### 📝 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 created tests covering the changes.
- [x] I have updated the documentation and checked the documentation
preview.

### ⌛ Dependencies

<!-- List all open PRs that this PR logically depends on. For example,
-->
<!-- - sagemath#12345: short description why this is a dependency -->
<!-- - sagemath#34567: ... -->
    
URL: sagemath#39137
Reported by: user202729
Reviewer(s): Frédéric Chapoton
vbraun pushed a commit to vbraun/sage that referenced this pull request Jan 30, 2025
    
The method is unnecessarily duplicated, which this pull request removes.

Besides, it wasn't originally correctly implemented for modules and
matrix spaces. Fixed now.

Side note: technically a matrix space over R is a (usually
noncommutative) R-algebra, which is in turn a R-module. Yet MatrixSpace
doesn't inherit from Module?

### 📝 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 created tests covering the changes.
- [x] I have updated the documentation and checked the documentation
preview.

### ⌛ Dependencies

<!-- List all open PRs that this PR logically depends on. For example,
-->
<!-- - sagemath#12345: short description why this is a dependency -->
<!-- - sagemath#34567: ... -->
    
URL: sagemath#39137
Reported by: user202729
Reviewer(s): Frédéric Chapoton
vbraun pushed a commit to vbraun/sage that referenced this pull request Jan 31, 2025
    
The method is unnecessarily duplicated, which this pull request removes.

Besides, it wasn't originally correctly implemented for modules and
matrix spaces. Fixed now.

Side note: technically a matrix space over R is a (usually
noncommutative) R-algebra, which is in turn a R-module. Yet MatrixSpace
doesn't inherit from Module?

### 📝 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 created tests covering the changes.
- [x] I have updated the documentation and checked the documentation
preview.

### ⌛ Dependencies

<!-- List all open PRs that this PR logically depends on. For example,
-->
<!-- - sagemath#12345: short description why this is a dependency -->
<!-- - sagemath#34567: ... -->
    
URL: sagemath#39137
Reported by: user202729
Reviewer(s): Frédéric Chapoton
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2 participants