Theorem MeasureTheory.QuasiMeasurePreserving.exists_preimage_eq_of_preimage_ae

Modification history

2026-10-04 13:42
Mathlib/MeasureTheory/Measure/QuasiMeasurePreserving.lean
chore: move `QuasiMeasurePreserving` to the namespace of `MeasurePreserving` (#44142) …
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