Skip to content

feat: formulate identity principle for meromorphic functions on topologically perfect subsets#37371

Open
kebekus wants to merge 1 commit intoleanprover-community:masterfrom
kebekus:kebekus/perfect
Open

feat: formulate identity principle for meromorphic functions on topologically perfect subsets#37371
kebekus wants to merge 1 commit intoleanprover-community:masterfrom
kebekus:kebekus/perfect

Conversation

@kebekus
Copy link
Copy Markdown
Collaborator

@kebekus kebekus commented Mar 30, 2026

Add a simple, but useful, reformulation of the identity principle for meromorphic functions on topologically perfect subsets. To facilitate application, establish (closures of) open subsets in perfect topological spaces are preperfect sets.


Open in Gitpod

@github-actions
Copy link
Copy Markdown

PR summary 7195043289

Import changes for modified files

Dependency changes

File Base Count Head Count Change
Mathlib.Analysis.Meromorphic.Divisor 1879 1880 +1 (+0.05%)
Import changes for all files
Files Import difference
4 files Mathlib.Analysis.Meromorphic.Complex Mathlib.Analysis.Meromorphic.Divisor Mathlib.Analysis.Meromorphic.NormalForm Mathlib.Analysis.SpecialFunctions.Gamma.Digamma
1

Declarations diff

+ PerfectSpace.preperfect_closure_of_isOpen
+ PerfectSpace.preperfect_of_isOpen
+ divisor_of_eventuallyEq_codiscreteWithin_preperfect
+ eventuallyEq_nhdsNE_of_eventuallyEq_codiscreteWithin_preperfect

You can run this locally as follows
## summary with just the declaration names:
./scripts/pr_summary/declarations_diff.sh <optional_commit>

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

The doc-module for scripts/pr_summary/declarations_diff.sh contains some details about this script.


No changes to technical debt.

You can run this locally as

./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).

@kebekus kebekus marked this pull request as ready for review March 30, 2026 14:38
@kebekus kebekus added the t-analysis Analysis (normed *, calculus) label Apr 1, 2026
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

t-analysis Analysis (normed *, calculus)

Projects

None yet

Development

Successfully merging this pull request may close these issues.

2 participants