UpperTriangularize

UpperTriangularize(matrix)

create a upper triangular matrix from the given matrix.

UpperTriangularize(matrix, n)

create a upper triangular matrix from the given matrix above the n-th subdiagonal.

See

• Wikipedia - Triangular matrix

Examples

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

Implementation status

• ✅ - full supported

Github

• Implementation of UpperTriangularize