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feat(Archive): CellularSurface instances (genus 1, 2, 3, 505)#39654

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RaggedR wants to merge 38 commits into

leanprover-community:masterleanprover-community/mathlib4:masterfrom

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feat(Archive): CellularSurface instances (genus 1, 2, 3, 505)#39654
RaggedR wants to merge 38 commits into
leanprover-community:masterfrom
RaggedR:feat/surface-instances

Merge remote-tracking branch 'upstream/master' into feat/surface-inst…

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Post PR summary comment on: pull_request_target

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continuous integration (mathlib forks) on: pull_request_target 14

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succeeded Jul 2, 2026 in 1m 22s

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