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v3
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Mathlib v3 is deprecated.
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Theorem
set.preimage_empty
Modification history
2022-12-07 20:30
src/data/set/basic.lean
refactor(data/set/basic): move image, preimage, and range to a new file (#17842) …
Modified
set.preimage_empty
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2017-08-02 22:32
data/set/basic.lean
refactor(data/set/basic,*): vimage -> preimage, add notation
Added
set.preimage_empty
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