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[Merged by Bors] - feat(CategoryTheory/Triangulated/TStructure): truncLE and truncGT#35364

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[Merged by Bors] - feat(CategoryTheory/Triangulated/TStructure): truncLE and truncGT#35364
joelriou wants to merge 16 commits intoleanprover-community:masterfrom
joelriou:spectral-sequences-1-trunc-legt

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@joelriou joelriou commented Feb 15, 2026

@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 32af1e5dd5

Import changes for modified files

No significant changes to the import graph

Import changes for all files
Files Import difference
Mathlib.CategoryTheory.Triangulated.TStructure.TruncLEGT (new file) 1165

Declarations diff

+ descTruncGT
+ descTruncGT_aux
+ instance (X : C) (a b : ℤ) :
+ instance (X : C) (a b : ℤ) : t.IsGE ((t.truncGELE a b).obj X) a := by
+ instance (X : C) (a b : ℤ) [t.IsGE X a] : t.IsGE ((t.truncGT b).obj X) a := by
+ instance (X : C) (a b : ℤ) [t.IsLE X b] :
+ instance (X : C) (a b : ℤ) [t.IsLE X b] : t.IsLE ((t.truncLE a).obj X) b := by
+ instance (X : C) (n : ℤ) : IsIso ((t.truncLE n).map ((t.truncLEι n).app X))
+ instance (X : C) (n : ℤ) [t.IsLE X n] : IsIso ((t.truncLEι n).app X) := by
+ instance (n : ℤ) (X : C) : t.IsGE ((t.truncGT (n - 1)).obj X) n
+ instance (n : ℤ) (X : C) : t.IsGE ((t.truncGT n).obj X) (n + 1)
+ instance (n : ℤ) (X : C) : t.IsLE ((t.truncLE n).obj X) n
+ instance (n : ℤ) : (t.truncGT n).Additive := by
+ instance (n : ℤ) : (t.truncLE n).Additive := by
+ isGE_iff_isIso_truncGTπ_app
+ isGE_iff_isZero_truncLE_obj
+ isGE_truncGT_obj
+ isIso_truncGT_map_iff
+ isIso_truncGT_map_truncGTπ_app
+ isIso_truncLE_map_iff
+ isIso_truncLE_map_truncLEι_app
+ isIso₁_truncLE_map_of_isGE
+ isIso₂_truncGT_map_of_isLE
+ isLE_iff_isIso_truncLEι_app
+ isLE_iff_isZero_truncGT_obj
+ isLE_truncLE_obj
+ isZero_truncLE_obj_of_isGE
+ liftTruncLE
+ liftTruncLE_aux
+ liftTruncLE_ι
+ natTransTruncLEOfLE
+ natTransTruncLEOfLE_refl
+ natTransTruncLEOfLE_refl_app
+ natTransTruncLEOfLE_trans
+ natTransTruncLEOfLE_trans_app
+ natTransTruncLEOfLE_ι
+ natTransTruncLEOfLE_ι_app
+ to_truncLE_obj_ext
+ triangleLEGE
+ triangleLEGEIsoTriangleLTGE
+ triangleLEGE_distinguished
+ triangleLEGT
+ triangleLEGTIsoTriangleLEGE
+ triangleLEGT_distinguished
+ truncGELE
+ truncGELEIsoLEGE
+ truncGELEIsoTruncGELT
+ truncGEδLE
+ truncGT
+ truncGTIsoTruncGE
+ truncGTδLE
+ truncGTπ
+ truncLE
+ truncLEGE
+ truncLEIsoTruncLT
+ truncLEIsoTruncLT_hom_ι
+ truncLEIsoTruncLT_hom_ι_app
+ truncLEIsoTruncLT_inv_ι
+ truncLEIsoTruncLT_inv_ι_app
+ truncLEι
+ π_descTruncGT
+ π_truncGTIsoTruncGE_hom
+ π_truncGTIsoTruncGE_hom_ι_app
+ π_truncGTIsoTruncGE_inv
+ π_truncGTIsoTruncGE_inv_ι_app
++ instance (X : C) (a b : ℤ) [t.IsGE X a] :

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) = (7.00, 0.00)
Current number Change Type
9982 7 backward.isDefEq

Current commit 19a9188b97
Reference commit 32af1e5dd5

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).

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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 Feb 21, 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 Feb 28, 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 Mar 2, 2026
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This pull request has conflicts, please merge master and resolve them.

@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 3, 2026
@github-actions github-actions bot removed merge-conflict The PR has a merge conflict with master, and needs manual merging. (this label is managed by a bot) large-import Automatically added label for PRs with a significant increase in transitive imports labels Mar 3, 2026
@joelriou joelriou removed the WIP Work in progress label Mar 3, 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 3, 2026
mathlib-bors bot pushed a commit that referenced this pull request Mar 3, 2026
…#35364)

Given a t-structure `t`, this PR introduces the variants `t.truncLE` and `t.truncGT` to `t.truncLT` and `t.truncGE`.
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mathlib-bors bot commented Mar 3, 2026

Pull request successfully merged into master.

Build succeeded:

@mathlib-bors mathlib-bors bot changed the title feat(CategoryTheory/Triangulated/TStructure): truncLE and truncGT [Merged by Bors] - feat(CategoryTheory/Triangulated/TStructure): truncLE and truncGT Mar 3, 2026
@mathlib-bors mathlib-bors bot closed this Mar 3, 2026
xroblot pushed a commit to xroblot/mathlib4 that referenced this pull request Mar 10, 2026
…leanprover-community#35364)

Given a t-structure `t`, this PR introduces the variants `t.truncLE` and `t.truncGT` to `t.truncLT` and `t.truncGE`.
pevogam pushed a commit to pevogam/mathlib4 that referenced this pull request Mar 19, 2026
…leanprover-community#35364)

Given a t-structure `t`, this PR introduces the variants `t.truncLE` and `t.truncGT` to `t.truncLT` and `t.truncGE`.
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