Skip to content

feat(RingTheory/): MvPolynomial is standard smooth#39709

Open
justus-springer wants to merge 4 commits into
leanprover-community:masterfrom
justus-springer:justus/MvPolynomial_smooth
Open

feat(RingTheory/): MvPolynomial is standard smooth#39709
justus-springer wants to merge 4 commits into
leanprover-community:masterfrom
justus-springer:justus/MvPolynomial_smooth

Conversation

@justus-springer

@justus-springer justus-springer commented May 22, 2026

Copy link
Copy Markdown
Collaborator

Add the trivial submersive presentation for MvPolynomial and show that MvPolynomial is standard smooth over its base ring. This will be used to show that affine space is smooth in #39710.


Open in Gitpod

@github-actions github-actions Bot added the t-ring-theory Ring theory label May 22, 2026
@github-actions

github-actions Bot commented May 22, 2026

Copy link
Copy Markdown

PR summary 23818b9e02

Import changes for modified files

No significant changes to the import graph

Import changes for all files
Files Import difference

Declarations diff (regex)

+ IsStandardSmoothOfRelativeDimension.mvPolynomial
+ IsStandardSmoothOfRelativeDimension.mvPolynomial_fin
+ dimension_mvPolynomial
+ jacobian_mvPolynomial
+++ mvPolynomial

You can run this locally as follows
## from your `mathlib4` directory:
git clone https://github.com/leanprover-community/mathlib-ci.git ../mathlib-ci

## summary with just the declaration names:
../mathlib-ci/scripts/pr_summary/declarations_diff.sh <optional_commit>

## more verbose report:
../mathlib-ci/scripts/pr_summary/declarations_diff.sh long <optional_commit>

The doc-module for scripts/pr_summary/declarations_diff.sh in the mathlib-ci repository contains some details about this script.

Declarations diff (Lean)

Lean-aware diff — post-build, computed from the Lean environment (commit 23818b9).

  • +9 new declarations
  • −0 removed declarations
+Algebra.IsStandardSmoothOfRelativeDimension.mvPolynomial
+Algebra.IsStandardSmoothOfRelativeDimension.mvPolynomial_fin
+Algebra.PreSubmersivePresentation.jacobian_mvPolynomial
+Algebra.PreSubmersivePresentation.mvPolynomial
+Algebra.PreSubmersivePresentation.mvPolynomial_map
+Algebra.Presentation.dimension_mvPolynomial
+Algebra.Presentation.mvPolynomial
+Algebra.Presentation.mvPolynomial_relation
+Algebra.SubmersivePresentation.mvPolynomial

No changes to strong technical debt.

No changes to weak technical debt.

Current commit 23818b9e02
Reference commit 2dfe37a6fa

This script lives in the mathlib-ci repository. To run it locally, from your mathlib4 directory:

git clone https://github.com/leanprover-community/mathlib-ci.git ../mathlib-ci
../mathlib-ci/scripts/reporting/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).

@mathlib-dependent-issues mathlib-dependent-issues Bot added the blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) label May 22, 2026
@mathlib-merge-conflicts

Copy link
Copy Markdown

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

@mathlib-merge-conflicts mathlib-merge-conflicts 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 May 26, 2026
@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 May 26, 2026
@mathlib-dependent-issues mathlib-dependent-issues Bot removed the blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) label May 26, 2026
@mathlib-dependent-issues

Copy link
Copy Markdown

This PR/issue depends on:

@faenuccio

Copy link
Copy Markdown
Contributor

@justus-springer Can you please merge master? This will help with the recent changes in handling cache. Thanks.

@justus-springer justus-springer added the awaiting-CI This PR does not pass CI yet. This label is automatically removed once it does. label Jun 20, 2026
@github-actions github-actions Bot removed the awaiting-CI This PR does not pass CI yet. This label is automatically removed once it does. label Jun 20, 2026
@mathlib-triage mathlib-triage Bot assigned jjdishere and unassigned faenuccio Jul 11, 2026
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

t-ring-theory Ring theory

Projects

None yet

Development

Successfully merging this pull request may close these issues.

3 participants