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[Merged by Bors] - feat(Algebra/Homology/SpectralObject): kernel and cokernel of differentials#35359

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joelriou:spectral-sequences-2-cycles-1
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[Merged by Bors] - feat(Algebra/Homology/SpectralObject): kernel and cokernel of differentials#35359
joelriou wants to merge 17 commits intoleanprover-community:masterfrom
joelriou:spectral-sequences-2-cycles-1

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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
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github-actions bot commented Feb 15, 2026

PR summary 6fcaafd481

Import changes for modified files

No significant changes to the import graph

Import changes for all files
Files Import difference
Mathlib.Algebra.Homology.SpectralObject.Cycles (new file) 835

Declarations diff

+ cokernelSequenceOpcycles
+ cokernelSequenceOpcycles_exact
+ cycles
+ cyclesMap
+ cyclesMap_comp
+ cyclesMap_i
+ cyclesMap_id
+ descOpcycles
+ iCycles
+ iCycles_δ
+ instance : Epi (X.pOpcycles f g n) := by
+ instance : Mono (X.iCycles f g n) := by
+ isZero_cycles
+ isZero_opcycles
+ kernelSequenceCycles
+ kernelSequenceCycles_exact
+ liftCycles
+ liftCycles_i
+ opcycles
+ opcyclesMap
+ opcyclesMap_comp
+ opcyclesMap_id
+ pOpcycles
+ p_descOpcycles
+ p_opcyclesMap
+ δ_pOpcycles
++ instance (hn₁ : n₀ + 1 = n₁) :

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) = (4.00, 0.00)
Current number Change Type
10875 4 backward.isDefEq

Current commit f9c6ce2ba0
Reference commit 6fcaafd481

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-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 25, 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 Feb 28, 2026
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@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
@joelriou joelriou removed the WIP Work in progress label Feb 28, 2026
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bors d+

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mathlib-bors bot commented Mar 3, 2026

✌️ joelriou can now approve this pull request. To approve and merge a pull request, simply reply with bors r+. More detailed instructions are available here.

@mathlib-triage mathlib-triage bot added the delegated This pull request has been delegated to the PR author (or occasionally another non-maintainer). label Mar 3, 2026
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joelriou commented Mar 3, 2026

Thanks!

bors merge

@mathlib-triage mathlib-triage bot added the ready-to-merge This PR has been sent to bors. label Mar 3, 2026
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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(Algebra/Homology/SpectralObject): kernel and cokernel of differentials [Merged by Bors] - feat(Algebra/Homology/SpectralObject): kernel and cokernel of differentials 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
pevogam pushed a commit to pevogam/mathlib4 that referenced this pull request Mar 19, 2026
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3 participants