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feat: a List lemma #11045

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TwoFX wants to merge 1 commit into from
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feat: a List lemma #11045

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@TwoFX TwoFX commented Nov 1, 2025

This PR adds the lemma List.append_singleton_inj.

@TwoFX TwoFX requested a review from digama0 as a code owner November 1, 2025 11:53
@TwoFX TwoFX added the changelog-library Library label Nov 1, 2025
@github-actions github-actions bot added the toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN label Nov 1, 2025
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leanprover-bot commented Nov 1, 2025

Reference manual CI status:

  • ❗ Reference manual CI can not be attempted yet, as the nightly-testing-2025-10-31 tag does not exist there yet. We will retry when you push more commits. If you rebase your branch onto nightly-with-manual, reference manual CI should run now. You can force reference manual CI using the force-manual-ci label. (2025-11-01 12:43:50)

leanprover-community-mathlib4-bot added a commit to leanprover-community/batteries that referenced this pull request Nov 1, 2025
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Update lean-toolchain for testing leanprover/lean4#11045
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leanprover-community-mathlib4-bot added a commit to leanprover-community/mathlib4-nightly-testing that referenced this pull request Nov 1, 2025
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Update lean-toolchain for testing leanprover/lean4#11045
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leanprover-community-bot commented Nov 1, 2025

Mathlib CI status (docs):

@leanprover-community-bot leanprover-community-bot added the builds-mathlib CI has verified that Mathlib builds against this PR label Nov 1, 2025
@TwoFX TwoFX closed this Nov 1, 2025
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