Mathlib Changelog
v3
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Mathlib v3 is deprecated.
Go to Mathlib v4
Theorem
preimage_neg_real
Modification history
2018-01-19 16:18
analysis/real.lean
feat(data/real,*): supporting material for metric spaces
Deleted
preimage_neg_real
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2017-08-10 16:36
topology/real.lean
construct reals as complete, linear ordered field
Added
preimage_neg_real
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