[Merged by Bors] - feat(Topology/Sets): injectivity of Compacts.map

[gasparattila]

---

• depends on: [Merged by Bors] - feat(Topology/Sets): injectivity of singleton map #31379

[gasparattila]

easy

[github-actions]

PR summary af43db4df4

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

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Declarations diff

+ map_injective
+ map_injective_iff

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.

---

No changes to technical debt.

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).

[plp127]

Can you add an iff version?

[gasparattila]

-awaiting-author

[mathlib4-dependent-issues-bot]

This PR/issue depends on:

• [Merged by Bors] - feat(Topology/Sets): injectivity of singleton map #31379
  By Dependent Issues (🤖). Happy coding!

[ocfnash]

Thanks!

bors d+

[mathlib-bors]

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

[gasparattila]

bors r+

[mathlib-bors]

Build failed:

• Post-Build Step

[gasparattila]

bors r+

[ocfnash]

bors r-

[mathlib-bors]

Canceled.

[ocfnash]

@gasparattila I cancelled this because it looks like you may have overlooked my suggestion to add simp to map_injective_iff.

Could you try that please before sending this back to bors?

[gasparattila]

Sorry, for some reason your message suggesting the simp didn't appear for me and I still can't see it. I've added it now.

bors r+

[mathlib-bors]

Pull request successfully merged into master.

Build succeeded:

• Lint style
• Build
• Post-Build Step