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[Merged by Bors] - feat(CategoryTheory/Triangulated/TStructure): properties of truncations indexed by EInt that use the octahedron axiom#35369

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[Merged by Bors] - feat(CategoryTheory/Triangulated/TStructure): properties of truncations indexed by EInt that use the octahedron axiom#35369
joelriou wants to merge 29 commits intoleanprover-community:masterfrom
joelriou:spectral-sequences-1-etrunc-2

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@joelriou joelriou added WIP Work in progress t-category-theory Category theory labels Feb 15, 2026
@github-actions github-actions bot added the large-import Automatically added label for PRs with a significant increase in transitive imports label Feb 15, 2026
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github-actions bot commented Feb 15, 2026

PR summary b029f5e21d

Import changes for modified files

No significant changes to the import graph

Import changes for all files
Files Import difference

Declarations diff

+ eTruncGEIsoGEGE
+ eTruncGEIsoGEGE_hom_inv_id_app
+ eTruncGEIsoGEGE_inv_hom_id_app
+ eTruncGEToGEGE
+ eTruncLTGEIsoGELT
+ eTruncLTGEIsoGELT_hom_app_fac
+ eTruncLTGEIsoGELT_hom_app_fac'
+ eTruncLTGEIsoGELT_hom_naturality
+ eTruncLTGEIsoGELT_naturality_app
+ eTruncLTGELTSelfToGELT
+ eTruncLTGELTSelfToLTGE
+ eTruncLTLTIsoLT
+ eTruncLTLTIsoLT_hom_inv_id_app
+ eTruncLTLTIsoLT_inv_hom_id_app
+ eTruncLTLTIsoLT_inv_hom_id_app_eTruncLT_obj
+ eTruncLTLTToLT
+ instance (X : C) (n : ℤ) [t.IsGE X n] (i : EInt) :
+ instance (X : C) (n : ℤ) [t.IsLE X n] (i : EInt) :
+ instance (a : EInt) (X : C) : IsIso ((t.eTruncLT.obj a).map ((t.eTruncLTι a).app X))
+ instance (a : EInt) (X : C) : IsIso ((t.eTruncLTι a).app ((t.eTruncLT.obj a).obj X)) := by
+ instance : IsIso (t.eTruncLTGELTSelfToGELT a b) := by
+ instance : IsIso (t.eTruncLTGELTSelfToLTGE a b) := by
+ isIso_eTruncGEIsoGEGE
+ isIso_eTruncGE_obj_map_truncGEπ_app
+ isIso_eTruncLTLTIsoLT
+ isIso_eTruncLT_obj_map_truncLTπ_app

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) = (6.00, 0.00)
Current number Change Type
10089 6 backward.isDefEq

Current commit 3baa91d70f
Reference commit b029f5e21d

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).

@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 Feb 15, 2026
@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 Feb 21, 2026
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This pull request has conflicts, please merge master and resolve them.

@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 Mar 5, 2026
@github-actions github-actions bot removed the large-import Automatically added label for PRs with a significant increase in transitive imports label Mar 5, 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 Mar 5, 2026
@joelriou joelriou removed the WIP Work in progress label Mar 5, 2026
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Otherwise everything looks fine to me.

@smorel394 smorel394 assigned chrisflav and unassigned chrisflav Mar 6, 2026
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Thanks!

bors merge

@mathlib-triage mathlib-triage bot added the ready-to-merge This PR has been sent to bors. label Mar 7, 2026
mathlib-bors bot pushed a commit that referenced this pull request Mar 7, 2026
…ns indexed by `EInt` that use the octahedron axiom (#35369)
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mathlib-bors bot commented Mar 7, 2026

Pull request successfully merged into master.

Build succeeded:

@mathlib-bors mathlib-bors bot changed the title feat(CategoryTheory/Triangulated/TStructure): properties of truncations indexed by EInt that use the octahedron axiom [Merged by Bors] - feat(CategoryTheory/Triangulated/TStructure): properties of truncations indexed by EInt that use the octahedron axiom Mar 7, 2026
@mathlib-bors mathlib-bors bot closed this Mar 7, 2026
xroblot pushed a commit to xroblot/mathlib4 that referenced this pull request Mar 8, 2026
xroblot pushed a commit to xroblot/mathlib4 that referenced this pull request Mar 9, 2026
seewoo5 pushed a commit to seewoo5/mathlib4 that referenced this pull request Mar 9, 2026
xroblot pushed a commit to xroblot/mathlib4 that referenced this pull request Mar 10, 2026
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4 participants