Theorem Submodule.IsCompl.projection_isIdempotentElem

Modification history

2025-07-28 23:36
Mathlib/LinearAlgebra/Projection.lean
feat(LinearAlgebra/Projection): define `Submodule.IsCompl.projection` (#27369) …
Added Submodule.IsCompl.projection_isIdempotentElemView on Github →