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add parameter immutable to graph generators in classical_geometries.py (part 2)#41736

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vbraun merged 8 commits intosagemath:developfrom
dcoudert:graphs/immutable_in_classical_geometries_2
Mar 22, 2026
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add parameter immutable to graph generators in classical_geometries.py (part 2)#41736
vbraun merged 8 commits intosagemath:developfrom
dcoudert:graphs/immutable_in_classical_geometries_2

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@dcoudert dcoudert commented Mar 1, 2026

Following discussions in #39177, we add the option to return immutable graphs to some generators in src/sage/graphs/generators/classical_geometries.py.

  • AffineOrthogonalPolarGraph, NonisotropicUnitaryPolarGraph, TaylorTwographDescendantSRG, TaylorTwographSRG, HaemersGraph, CossidentePenttilaGraph, Nowhere0WordsTwoWeightCodeGraph, OrthogonalDualPolarGraph

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

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github-actions bot commented Mar 1, 2026

Documentation preview for this PR (built with commit 4b63400; changes) is ready! 🎉
This preview will update shortly after each push to this PR.

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LGTM.

vbraun pushed a commit to vbraun/sage that referenced this pull request Mar 6, 2026
sagemathgh-41736: add parameter immutable to graph generators in `classical_geometries.py` (part 2)
    
Following discussions in sagemath#39177, we add the option to return immutable
graphs to some generators in
`src/sage/graphs/generators/classical_geometries.py`.
- `AffineOrthogonalPolarGraph`, `NonisotropicUnitaryPolarGraph`,
`TaylorTwographDescendantSRG`, `TaylorTwographSRG`, `HaemersGraph`,
`CossidentePenttilaGraph`, `Nowhere0WordsTwoWeightCodeGraph`,
`OrthogonalDualPolarGraph`



### 📝 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.
- [ ] I have created tests covering the changes.
- [ ] 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#41736
Reported by: David Coudert
Reviewer(s): Travis Scrimshaw
vbraun pushed a commit to vbraun/sage that referenced this pull request Mar 15, 2026
sagemathgh-41736: add parameter immutable to graph generators in `classical_geometries.py` (part 2)
    
Following discussions in sagemath#39177, we add the option to return immutable
graphs to some generators in
`src/sage/graphs/generators/classical_geometries.py`.
- `AffineOrthogonalPolarGraph`, `NonisotropicUnitaryPolarGraph`,
`TaylorTwographDescendantSRG`, `TaylorTwographSRG`, `HaemersGraph`,
`CossidentePenttilaGraph`, `Nowhere0WordsTwoWeightCodeGraph`,
`OrthogonalDualPolarGraph`



### 📝 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.
- [ ] I have created tests covering the changes.
- [ ] 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#41736
Reported by: David Coudert
Reviewer(s): Travis Scrimshaw
vbraun pushed a commit to vbraun/sage that referenced this pull request Mar 18, 2026
sagemathgh-41736: add parameter immutable to graph generators in `classical_geometries.py` (part 2)
    
Following discussions in sagemath#39177, we add the option to return immutable
graphs to some generators in
`src/sage/graphs/generators/classical_geometries.py`.
- `AffineOrthogonalPolarGraph`, `NonisotropicUnitaryPolarGraph`,
`TaylorTwographDescendantSRG`, `TaylorTwographSRG`, `HaemersGraph`,
`CossidentePenttilaGraph`, `Nowhere0WordsTwoWeightCodeGraph`,
`OrthogonalDualPolarGraph`



### 📝 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.
- [ ] I have created tests covering the changes.
- [ ] 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#41736
Reported by: David Coudert
Reviewer(s): Travis Scrimshaw
vbraun pushed a commit to vbraun/sage that referenced this pull request Mar 21, 2026
sagemathgh-41736: add parameter immutable to graph generators in `classical_geometries.py` (part 2)
    
Following discussions in sagemath#39177, we add the option to return immutable
graphs to some generators in
`src/sage/graphs/generators/classical_geometries.py`.
- `AffineOrthogonalPolarGraph`, `NonisotropicUnitaryPolarGraph`,
`TaylorTwographDescendantSRG`, `TaylorTwographSRG`, `HaemersGraph`,
`CossidentePenttilaGraph`, `Nowhere0WordsTwoWeightCodeGraph`,
`OrthogonalDualPolarGraph`



### 📝 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.
- [ ] I have created tests covering the changes.
- [ ] 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#41736
Reported by: David Coudert
Reviewer(s): Travis Scrimshaw
@vbraun vbraun merged commit 57bd615 into sagemath:develop Mar 22, 2026
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3 participants