Matrix row norm

15.4.4 Matrix row norm

The row norm of a matrix A is max_k(∑_j |a_j,k|). (This is also an operator norm; see Section 15.4.6.) The rownorm or rowNorm command finds the row norm of a matrix. For matrices, linfnorm is also a synonym.

rownorm takes A, a matrix
rownorm(A) returns the row norm of A.

Example

rownorm([[1,2],[3,-4]])

Indeed, max{1+2,3+4}=7.