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[Merged by Bors] - feat(Geometry/Euclidean/Sphere/SecondInter): isometry and subtype lemmas#32023

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[Merged by Bors] - feat(Geometry/Euclidean/Sphere/SecondInter): isometry and subtype lemmas#32023
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@jsm28 jsm28 commented Nov 23, 2025

Add lemmas about Sphere.secondInter when mapping points under an affine isometry or from a subspace to the full space.


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Add lemmas about `Sphere.secondInter` when mapping points under an
affine isometry or from a subspace to the full space.
@jsm28 jsm28 added the t-euclidean-geometry Affine and axiomatic geometry label Nov 23, 2025
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PR summary d33ff7cbf9

Import changes for modified files

No significant changes to the import graph

Import changes for all files
Files Import difference

Declarations diff

+ Sphere.coe_secondInter
+ Sphere.secondInter_map

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).

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Thanks 🎉

bors merge

@ghost ghost added the ready-to-merge This PR has been sent to bors. label Dec 1, 2025
mathlib-bors bot pushed a commit that referenced this pull request Dec 1, 2025
…mas (#32023)

Add lemmas about `Sphere.secondInter` when mapping points under an affine isometry or from a subspace to the full space.
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mathlib-bors bot commented Dec 1, 2025

Pull request successfully merged into master.

Build succeeded:

@mathlib-bors mathlib-bors bot changed the title feat(Geometry/Euclidean/Sphere/SecondInter): isometry and subtype lemmas [Merged by Bors] - feat(Geometry/Euclidean/Sphere/SecondInter): isometry and subtype lemmas Dec 1, 2025
@mathlib-bors mathlib-bors bot closed this Dec 1, 2025
@jsm28 jsm28 deleted the secondInter_map branch December 1, 2025 20:59
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