[Merged by Bors] - feat: finite sum, difference, scalar product of differentiable sections is differentiable by grunweg · Pull Request #26871 · leanprover-community/mathlib4

grunweg · 2025-07-07T14:19:08Z

This mirrors the additions of #26674 to mdifferentiable sections.
Part of the path towards geodesics and the Levi-Civita connection.

Co-authored-by: Patrick Massot patrickmassot@free.fr

depends on: [Merged by Bors] - feat: mdifferentiableOn_section_of_mem_baseSet₀ #26870 (and perhaps more/need to split afterwards)

github-actions · 2025-07-07T14:21:18Z

PR summary af353e32f4

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

Declarations diff

+ MDifferentiable.sum_section
+ MDifferentiableAt.smul_const_section
+ MDifferentiableAt.smul_section
+ MDifferentiableAt.sum_section
+ MDifferentiableOn.smul_const_section
+ MDifferentiableOn.smul_section
+ MDifferentiableOn.sum_section
+ MDifferentiableWithinAt.smul_section
+ MDifferentiableWithinAt.sum_section
+ mDifferentiableOn_sub_section
+ mdifferentiableAt_add_section
+ mdifferentiableAt_neg_section
+ mdifferentiableAt_sub_section
+ mdifferentiableOn_add_section
+ mdifferentiableOn_neg_section
+ mdifferentiableWithinAt_add_section
+ mdifferentiableWithinAt_neg_section
+ mdifferentiableWithinAt_smul_const_section
+ mdifferentiableWithinAt_sub_section
+ mdifferentiable_add_section
+ mdifferentiable_neg_section
+ mdifferentiable_smul_const_section
+ mdifferentiable_smul_section
+ mdifferentiable_sub_section

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).

leanprover-community-bot-assistant · 2025-07-07T21:10:55Z

This pull request has conflicts, please merge master and resolve them.

mathlib4-dependent-issues-bot · 2025-09-15T20:36:14Z

This PR/issue depends on:

~~[Merged by Bors] - feat: mdifferentiableOn_section_of_mem_baseSet₀ #26870~~
By Dependent Issues (🤖). Happy coding!

ocfnash

Thanks, one minor suggestion.

bors d+

Mathlib/Geometry/Manifold/VectorBundle/MDifferentiable.lean

mathlib-bors · 2025-09-24T16:41:46Z

✌️ grunweg can now approve this pull request. To approve and merge a pull request, simply reply with bors r+. More detailed instructions are available here.

Co-authored-by: Oliver Nash <7734364+ocfnash@users.noreply.github.com>

grunweg · 2025-09-27T09:53:27Z

Thank you for the review!
bors merge

…ns is differentiable (#26871) This mirrors the additions of #26674 to `mdifferentiable` sections. Part of the path towards geodesics and the Levi-Civita connection. Co-authored-by: Patrick Massot <patrickmassot@free.fr> Co-authored-by: Michael Rothgang <rothgang@math.uni-bonn.de>

mathlib-bors · 2025-09-27T10:09:32Z

Canceled.

grunweg · 2025-09-27T10:09:41Z

I'm not sure why CI failed (edit: ah, that was a known issue not caused by this PR): let's try merging master and see what happens.

grunweg · 2025-09-27T10:34:04Z

CI is green: let's try again!
bors merge

…ns is differentiable (#26871) This mirrors the additions of #26674 to `mdifferentiable` sections. Part of the path towards geodesics and the Levi-Civita connection. Co-authored-by: Patrick Massot <patrickmassot@free.fr> Co-authored-by: Michael Rothgang <rothgang@math.uni-bonn.de>

mathlib-bors · 2025-09-27T11:10:44Z

Pull request successfully merged into master.

Build succeeded:

CI Success

… differentiable (#29686) Mirrors analogous API for C^n sections; this is added mostly for completeness. Follow-up to #26871. Hence, this also originated from our work towards the path towards geodesics and the Levi-Civita connection. Co-authored-by: Michael Rothgang <rothgang@math.uni-bonn.de>

…ns is differentiable (leanprover-community#26871) This mirrors the additions of leanprover-community#26674 to `mdifferentiable` sections. Part of the path towards geodesics and the Levi-Civita connection. Co-authored-by: Patrick Massot <patrickmassot@free.fr> Co-authored-by: Michael Rothgang <rothgang@math.uni-bonn.de>

… differentiable (leanprover-community#29686) Mirrors analogous API for C^n sections; this is added mostly for completeness. Follow-up to leanprover-community#26871. Hence, this also originated from our work towards the path towards geodesics and the Levi-Civita connection. Co-authored-by: Michael Rothgang <rothgang@math.uni-bonn.de>

…ns is differentiable (leanprover-community#26871) This mirrors the additions of leanprover-community#26674 to `mdifferentiable` sections. Part of the path towards geodesics and the Levi-Civita connection. Co-authored-by: Patrick Massot <patrickmassot@free.fr> Co-authored-by: Michael Rothgang <rothgang@math.uni-bonn.de>

… differentiable (leanprover-community#29686) Mirrors analogous API for C^n sections; this is added mostly for completeness. Follow-up to leanprover-community#26871. Hence, this also originated from our work towards the path towards geodesics and the Levi-Civita connection. Co-authored-by: Michael Rothgang <rothgang@math.uni-bonn.de>

github-actions bot added the t-differential-geometry Manifolds etc label Jul 7, 2025

grunweg mentioned this pull request Jul 7, 2025

Mr. Covariant Derivatives #26221

Draft

35 tasks

mathlib4-dependent-issues-bot added the blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) label Jul 7, 2025

grunweg changed the title ~~Everything, with all the deps. TODO, make the same fixes!~~ feat: finite sum, difference, scalar product of differentiable sections is differentiable Jul 7, 2025

leanprover-community-bot-assistant added the merge-conflict The PR has a merge conflict with master, and needs manual merging. (this label is managed by a bot) label Jul 7, 2025

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 Sep 15, 2025

grunweg added 2 commits September 15, 2025 22:04

Change

023f9bd

Polish. Fix doc-string typo (pre-existing); add to authors.

e2e7185

grunweg force-pushed the MR-mdifferentiable-ops branch from f33ba4b to e2e7185 Compare September 15, 2025 20:04

grunweg mentioned this pull request Sep 15, 2025

[Merged by Bors] - feat: finsum and locally finite sums of differentiable sections are differentiable #29686

Closed

1 task

grunweg removed the blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) label Sep 15, 2025

leanprover-community-bot-assistant assigned PatrickMassot Sep 23, 2025

ocfnash approved these changes Sep 24, 2025

View reviewed changes

Mathlib/Geometry/Manifold/VectorBundle/MDifferentiable.lean Outdated Show resolved Hide resolved

ghost added the delegated This pull request has been delegated to the PR author (or occasionally another non-maintainer). label Sep 24, 2025

Update Mathlib/Geometry/Manifold/VectorBundle/MDifferentiable.lean

4efcae9

Co-authored-by: Oliver Nash <7734364+ocfnash@users.noreply.github.com>

Merge branch 'master' into MR-mdifferentiable-ops

05d8c0a

mathlib-bors bot changed the title ~~feat: finite sum, difference, scalar product of differentiable sections is differentiable~~ [Merged by Bors] - feat: finite sum, difference, scalar product of differentiable sections is differentiable Sep 27, 2025

mathlib-bors bot closed this Sep 27, 2025

grunweg deleted the MR-mdifferentiable-ops branch September 27, 2025 11:23

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

[Merged by Bors] - feat: finite sum, difference, scalar product of differentiable sections is differentiable#26871

[Merged by Bors] - feat: finite sum, difference, scalar product of differentiable sections is differentiable#26871
grunweg wants to merge 4 commits intoleanprover-community:masterfrom
grunweg:MR-mdifferentiable-ops

grunweg commented Jul 7, 2025 •

edited

Loading

Uh oh!

github-actions bot commented Jul 7, 2025 •

edited

Loading

Declarations diff

Uh oh!

leanprover-community-bot-assistant commented Jul 7, 2025

Uh oh!

mathlib4-dependent-issues-bot commented Sep 15, 2025

Uh oh!

ocfnash left a comment

Uh oh!

Uh oh!

mathlib-bors bot commented Sep 24, 2025

Uh oh!

grunweg commented Sep 27, 2025

Uh oh!

mathlib-bors bot commented Sep 27, 2025

Uh oh!

grunweg commented Sep 27, 2025 •

edited

Loading

Uh oh!

grunweg commented Sep 27, 2025

Uh oh!

mathlib-bors bot commented Sep 27, 2025

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

5 participants

Conversation

grunweg commented Jul 7, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

github-actions bot commented Jul 7, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

PR summary af353e32f4

Import changes for modified files

Declarations diff

Uh oh!

leanprover-community-bot-assistant commented Jul 7, 2025

Uh oh!

mathlib4-dependent-issues-bot commented Sep 15, 2025

Uh oh!

ocfnash left a comment

Choose a reason for hiding this comment

Uh oh!

Uh oh!

mathlib-bors bot commented Sep 24, 2025

Uh oh!

grunweg commented Sep 27, 2025

Uh oh!

mathlib-bors bot commented Sep 27, 2025

Uh oh!

grunweg commented Sep 27, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

grunweg commented Sep 27, 2025

Uh oh!

mathlib-bors bot commented Sep 27, 2025

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

5 participants

grunweg commented Jul 7, 2025 •

edited

Loading

github-actions bot commented Jul 7, 2025 •

edited

Loading

grunweg commented Sep 27, 2025 •

edited

Loading