Theorem LaurentSeries.valuation_surjective

Modification history

2026-03-06 13:45
Mathlib/RingTheory/LaurentSeries.lean
chore(RingTheory/Valuation/RankOne): modify the definition of Valuation.RankOne using its range rather than its codomain (#26872) …
Added LaurentSeries.valuation_surjectiveView on Github →