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feat(Algebra/ModuleCat/Presheaf): composition of pushforwards and pullbacks and compatibilites#17589

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presheaf-of-modules-pullback-more-api
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feat(Algebra/ModuleCat/Presheaf): composition of pushforwards and pullbacks and compatibilites#17589
joelriou wants to merge 61 commits intomasterfrom
presheaf-of-modules-pullback-more-api

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@joelriou joelriou commented Oct 9, 2024

The composition of two pullback functors on presheaves of modules pullback φ ⋙ pullback ψ identifies to the pullback of the composition. We show compatibilites for these isomorphisms: they are deduced from similar identifies for pushforward (in which case they are rfl).


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@joelriou joelriou added WIP Work in progress t-category-theory Category theory t-algebraic-geometry Algebraic geometry labels Oct 9, 2024
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github-actions bot commented Oct 9, 2024

PR summary 64ce1d7195

Import changes for modified files

No significant changes to the import graph

Import changes for all files
Files Import difference

Declarations diff

+ instance : (pushforward.{v} (F := F ⋙ G) (φ ≫ whiskerLeft F.op ψ)).IsRightAdjoint
+ instance : (pushforward.{v} (F := F ⋙ 𝟭 D) (φ ≫ whiskerLeft F.op (𝟙 R))).IsRightAdjoint
+ instance : (pushforward.{v} (F := 𝟭 C ⋙ F) (𝟙 S ≫ whiskerLeft (𝟭 C).op φ)).IsRightAdjoint
+ instance : (pushforward.{v} (F := 𝟭 C) (𝟙 S)).IsRightAdjoint
+ pullbackComp
+ pullbackId
+ pullbackId_inv_app
+ pullback_assoc
+ pullback_comp_id
+ pullback_id_comp
+ pushforwardComp
+ pushforwardId
+ pushforward_assoc
+ pushforward_comp_id
+ pushforward_hom_app_assoc
+ pushforward_id_comp
+ pushforward_inv_app_assoc
+ unit_app_comp_pushforward_map_pullbackComp_hom

You can run this locally as follows
## summary with just the declaration names:
./scripts/declarations_diff.sh <optional_commit>

## more verbose report:
./scripts/declarations_diff.sh long <optional_commit>

The doc-module for script/declarations_diff.sh contains some details about this script.


Increase in tech debt: (relative, absolute) = (3.00, 0.00)
Current number Change Type
764 3 erw

Current commit e2db97e769
Reference commit 64ce1d7195

You can run this locally as

./scripts/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).

@mathlib4-dependent-issues-bot mathlib4-dependent-issues-bot added the blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) label Oct 9, 2024
@leanprover-community-bot-assistant leanprover-community-bot-assistant added the merge-conflict The PR has a merge conflict with master, and needs manual merging. (this label is managed by a bot) label Oct 14, 2024
@mathlib4-dependent-issues-bot mathlib4-dependent-issues-bot removed the blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) label Jan 11, 2025
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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 Jan 23, 2025
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joelriou commented Oct 8, 2025

This PR has been migrated to a fork-based workflow: #30318

Comment on lines +168 to +169
<<<<<<< HEAD
=======
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[imports (comment with "bot fix style" to have the bot commit all style suggestions)] reported by reviewdog 🐶

Suggested change
<<<<<<< HEAD
=======

<<<<<<< HEAD
=======
import Mathlib.Algebra.Category.ModuleCat.Presheaf.Monoidal
>>>>>>> origin
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[imports (comment with "bot fix style" to have the bot commit all style suggestions)] reported by reviewdog 🐶

Suggested change
>>>>>>> origin

@YaelDillies YaelDillies deleted the presheaf-of-modules-pullback-more-api branch October 13, 2025 07:51
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