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chore(AlgebraicTopology): rename SingularHomology.HomotopyInvarianceTopCat#37658

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chore(AlgebraicTopology): rename SingularHomology.HomotopyInvarianceTopCat#37658
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@joelriou joelriou commented Apr 5, 2026

Following #37656, it is possible to rename SingularHomology.HomotopyInvarianceTopCat as SingularHomology.HomotopyInvariance.


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@joelriou joelriou added WIP Work in progress t-algebraic-topology Algebraic topology labels Apr 5, 2026
@joelriou joelriou changed the title chore(AlgebraicTopology): rename SingularHomology.HomotopyInvarianceTopCat. chore(AlgebraicTopology): rename SingularHomology.HomotopyInvarianceTopCat Apr 5, 2026
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github-actions bot commented Apr 5, 2026

PR summary 1ba90ab6bb

Import changes for modified files

Dependency changes

File Base Count Head Count Change
Mathlib.AlgebraicTopology.SingularHomology.HomotopyInvarianceTopCat 1720 0 -1720 (-100.00%)
Mathlib.AlgebraicTopology.SingularHomology.HomotopyInvariance 1707 1721 +14 (+0.82%)
Import changes for all files
Files Import difference
Mathlib.AlgebraicTopology.SingularHomology.HomotopyInvarianceTopCat -1720
Mathlib.AlgebraicTopology.SingularHomology.Basic 1
Mathlib.AlgebraicTopology.SingularHomology.HomotopyInvariance 14
Mathlib.AlgebraicTopology.SimplicialSet.Homology.Basic (new file) 1086
Mathlib.AlgebraicTopology.SimplicialSet.Homology.HomotopyInvariance (new file) 1137

Declarations diff

+ chainComplex
+ chainComplexFunctor
+ chainComplexFunctorAdjunction
+ chainComplexXCofan
+ chainComplex_hom_ext
+ congr_homologyMap
+ congr_sSetHomologyMap
+ homology
+ homologyFunctor
+ homologyMap
+ homologyMap_comp
+ homologyMap_id
+ instance : (chainComplexFunctor C).Additive := by
+ isColimitChainComplexXCofan
+ sSetChainComplexMap
+ ιChainComplex
+ ιChainComplex_d
+ ι_chainComplexMap_f
++ chainComplexMap
++-- congr_homologyMap_singularChainComplexFunctor
++-- singularChainComplexFunctorObjMap
- SSet.singularChainComplexFunctor
- SSet.singularChainComplexFunctorAdjunction
- instance : (SSet.singularChainComplexFunctor C).Additive := by

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.


Increase in tech debt: (relative, absolute) = (1.00, 0.00)
Current number Change Type
6872 1 backward.isDefEq.respectTransparency

Current commit 05b03e3985
Reference commit 1ba90ab6bb

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).

note: file Mathlib/AlgebraicTopology/SingularHomology/HomotopyInvarianceTopCat.lean was removed.
Please create a follow-up pull request adding a module deprecation. Thanks!

@github-actions github-actions bot added the file-removed A Lean module was (re)moved without a `deprecated_module` annotation label Apr 5, 2026
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github-actions bot commented Apr 5, 2026

✅ PR Title Formatted Correctly

The title of this PR has been updated to match our commit style conventions.
Thank you!

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This PR/issue depends on:

@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 Apr 5, 2026
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