Mathlib Changelog
v3
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Mathlib v3 is deprecated.
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Commit
2018-08-28 17:33
ed5a3389
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feat(data/set/basic): some more basic set lemmas (
#288
)
Estimated changes
Modified
data/set/basic.lean
added
theorem
set.inter_singleton_ne_empty
added
theorem
set.mem_prod'
added
theorem
set.preimage_subset_iff
added
theorem
set.sub_preimage_iff