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v3
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Mathlib v3 is deprecated.
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Theorem
set.ssubset_iff_of_subset
Modification history
2020-06-14 16:36
src/data/set/basic.lean
chore(data/finset): rename `ext`/`ext'`/`ext_iff` (#3069) …
Added
set.ssubset_iff_of_subset
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