Theorem LinearMap.toMatrix_directSum_collectedBasis_eq_blockDiagonal'

Modification history

2023-11-16 10:23
Mathlib/Algebra/DirectSum/LinearMap.lean
feat: the trace of a direct sum is the sum of the traces (#8369)
Added LinearMap.toMatrix_directSum_collectedBasis_eq_blockDiagonal'View on Github →