LowerTriangularize

LowerTriangularize(matrix)

create a lower triangular matrix from the given matrix.

LowerTriangularize(matrix, n)

create a lower triangular matrix from the given matrix below the n-th subdiagonal.

See

• Wikipedia - Triangular matrix

Examples

>> LowerTriangularize({{a,b,c,d}, {d,e,f,g}, {h,i,j,k}, {l,m,n,o}}, -1)
{{0,0,0,0}
 {d,0,0,0}
 {h,i,0,0}
 {l,m,n,0}}

Implementation status

• ✅ - full supported

Github

• Implementation of LowerTriangularize