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[Merged by Bors] - chore: golf the proof in #26875#28046

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grunweg:smoothsection-mr
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[Merged by Bors] - chore: golf the proof in #26875#28046
grunweg wants to merge 3 commits intoleanprover-community:masterfrom
grunweg:smoothsection-mr

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@grunweg grunweg commented Aug 6, 2025

From the path towards the existence of Riemannian metrics, i.e. towards the Levi-Civita connection.


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@grunweg grunweg added the WIP Work in progress label Aug 6, 2025
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github-actions bot commented Aug 6, 2025

PR summary 3c157e7927

Import changes for modified files

No significant changes to the import graph

Import changes for all files
Files Import difference

Declarations diff

- contMDiff_totalSpace_weighted_sum_of_local_sections

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).

@github-actions github-actions bot added the t-differential-geometry Manifolds etc label Aug 6, 2025
@grunweg grunweg changed the title Smoothsection mr chore: golf the proof in #26875 Aug 6, 2025
grunweg added a commit to grunweg/mathlib4 that referenced this pull request Aug 6, 2025
Extracted from leanprover-community#28046, which is necessary for the construction of Riemanian
metric. As such, part of the path towards geodesics and the Levi-Civita
connection.
@grunweg grunweg added blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) and removed WIP Work in progress labels Aug 6, 2025
@mathlib4-merge-conflict-bot mathlib4-merge-conflict-bot added the merge-conflict The PR has a merge conflict with master, and needs manual merging. (this label is managed by a bot) label Aug 6, 2025
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This pull request has conflicts, please merge master and resolve them.

@github-actions github-actions bot removed the merge-conflict The PR has a merge conflict with master, and needs manual merging. (this label is managed by a bot) label Aug 6, 2025
@mathlib4-dependent-issues-bot mathlib4-dependent-issues-bot removed the blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) label Aug 20, 2025
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@mathlib4-merge-conflict-bot mathlib4-merge-conflict-bot added the merge-conflict The PR has a merge conflict with master, and needs manual merging. (this label is managed by a bot) label Aug 20, 2025
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This pull request has conflicts, please merge master and resolve them.

The lemma does not really have mathematical content; most general ideas
have been factored out. Thus, I consider the brevity a net improvement.
@github-actions github-actions bot removed the merge-conflict The PR has a merge conflict with master, and needs manual merging. (this label is managed by a bot) label Aug 21, 2025
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grunweg commented Aug 21, 2025

@michaellee94 In case you're interested, here is how I would golf the smoothness lemma you added in #26875.

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grunweg commented Aug 21, 2025

@PatrickMassot Would you like to take a look? This is my follow-up to the PR we both reviewed.

@grunweg grunweg requested a review from PatrickMassot August 21, 2025 13:07
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bors merge

@ghost ghost added the ready-to-merge This PR has been sent to bors. label Aug 22, 2025
mathlib-bors bot pushed a commit that referenced this pull request Aug 22, 2025
From the path towards the existence of Riemannian metrics, i.e. towards the Levi-Civita connection.
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mathlib-bors bot commented Aug 23, 2025

Pull request successfully merged into master.

Build succeeded:

@mathlib-bors mathlib-bors bot changed the title chore: golf the proof in #26875 [Merged by Bors] - chore: golf the proof in #26875 Aug 23, 2025
@mathlib-bors mathlib-bors bot closed this Aug 23, 2025
Paul-Lez pushed a commit to Paul-Lez/mathlib4 that referenced this pull request Aug 23, 2025
…nity#28046)

From the path towards the existence of Riemannian metrics, i.e. towards the Levi-Civita connection.
pechersky pushed a commit to pechersky/mathlib4 that referenced this pull request Aug 25, 2025
…nity#28046)

From the path towards the existence of Riemannian metrics, i.e. towards the Levi-Civita connection.
FormulaRabbit81 pushed a commit to YaelDillies/mathlib4 that referenced this pull request Aug 30, 2025
…nity#28046)

From the path towards the existence of Riemannian metrics, i.e. towards the Levi-Civita connection.
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4 participants