Theorem ball_zero_subset_range_iff_surjective

Modification history

2025-11-07 20:33
Mathlib/Analysis/Normed/Operator/Basic.lean
feat(Analysis.LocallyConvex): a linear map is surjective iff its image contains a ball, or a closed ball, or a sphere (#29033) …
Added ball_zero_subset_range_iff_surjectiveView on Github →