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Mathlib v3 is deprecated.
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Theorem
list.countp_eq_zero
Modification history
2022-10-04 05:52
src/data/list/count.lean
refactor(data/list/count): review API, add lemmas (#16736) …
Modified
list.countp_eq_zero
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2022-05-13 05:13
src/data/list/count.lean
feat(data/list/{count,perm},data/multiset/basic): countp and count lemmas (#14108)
Added
list.countp_eq_zero
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