[Merged by Bors] - chore: Golf Finset.exists_subsuperset_card_eq
#14425
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Thanks Bhavik!
PR summary 9e57acb865Import changes for modified filesNo significant changes to the import graph Import changes for all files
Declarations diffNo declarations were harmed in the making of this PR! 🐙 You can run this locally as follows## summary with just the declaration names:
./scripts/no_lost_declarations.sh short <optional_commit>
## more verbose report:
./scripts/no_lost_declarations.sh <optional_commit> |
YaelDillies
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eric-wieser
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Jul 4, 2024
| replace hk : n + k = card (erase t a) := by rw [card_erase_of_mem (mem_sdiff.1 ha).1]; omega | ||
| obtain ⟨u, hsu, hut, hu⟩ := ih hst hk | ||
| exact ⟨u, hsu, hut.trans (erase_subset ..), hu⟩ | ||
| refine Nat.decreasingInduction' ?_ hnt ⟨t, by simp [hst]⟩ |
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This bugged me, so I've made a start on #14431
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Nerdsniping Eric is the best kind of nerdsnipe 😝
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This was the best possible outcome of this golf :D
b-mehta
approved these changes
Jul 5, 2024
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I'd prefer to block this on #14431, to motivate review there once I finish up in an hour or so |
eric-wieser
approved these changes
Jul 5, 2024
leanprover-community-mathlib4-bot
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Pull request successfully merged into master. Build succeeded: |
mathlib-bors
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Finset.exists_subsuperset_card_eqFinset.exists_subsuperset_card_eq
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Thanks Bhavik!