[wwylele]

---

• depends on [Merged by Bors] - feat(Analysis/SpecialFunction): bessel function of the first kind #42760
• depends on [Merged by Bors] - feat(Topology/InfiniteSum): applying the sum of functions #42829
• depends on [Merged by Bors] - feat(Analysis/SpecialFunctions): the recurrence relation of bessel function J #43853

[github-actions]

PR summary d50fe48244

Import changes for modified files

Dependency changes

File	Base Count	Head Count	Change
Mathlib.Analysis.SpecialFunctions.RegularizedHypergeometric	2831	2832	+1 (+0.04%)
Mathlib.Analysis.SpecialFunctions.Bessel	2833	2834	+1 (+0.04%)

Import changes for all files

Files	Import difference
Mathlib.Analysis.SpecialFunctions.Bessel Mathlib.Analysis.SpecialFunctions.RegularizedHypergeometric	1

---

Declarations diff (regex)

+ deriv_regularizedHGFun
+ mul_deriv_besselJ_eq_besselJ_add_one
+ mul_deriv_besselJ_eq_besselJ_add_one_int
+ mul_deriv_besselJ_eq_besselJ_sub_one
+ mul_deriv_besselJ_eq_besselJ_sub_one_int
+ mul_regularizedHGFunCoeff
+ summable_pow_smul_coeff_derivSeries_regularizedHGFunSeries
+ two_mul_deriv_besselJ
+ two_mul_deriv_besselJ_int

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 d50fe48).

• +9 new declarations
• −0 removed declarations

+Complex.deriv_regularizedHGFun
+Complex.mul_deriv_besselJ_eq_besselJ_add_one
+Complex.mul_deriv_besselJ_eq_besselJ_add_one_int
+Complex.mul_deriv_besselJ_eq_besselJ_sub_one
+Complex.mul_deriv_besselJ_eq_besselJ_sub_one_int
+Complex.mul_regularizedHGFunCoeff
+Complex.summable_pow_smul_coeff_derivSeries_regularizedHGFunSeries
+Complex.two_mul_deriv_besselJ
+Complex.two_mul_deriv_besselJ_int

---

No changes to strong technical debt.
No changes to weak technical debt.

Current commit d50fe48244
Reference commit c21f07790b

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.py 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-merge-conflicts]

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