Infinity norm of 2-d matrix

Hi

  1. I just want to confirm a concept. In a 2-d list each list in it is treated as an element of that 2-d list. So infinity norm of a 2-d list will be equal to absolute sum of that list(element) whose sum is maximum ?? here by element I mean each list which is present in a 2-d list.

  2. what’s the infinity norm in a 2-d matrix, maximum of the sum along the columns or maximum of the sum along the rows ?

Hey @pasta, infinity norm of 2-D matrix is given by this formula ,

So the answer should be 7, as |2| + |-4| + |1| = 7.
I think this answers both of your queries.

Hope this resolved your doubt.
Plz mark the doubt as resolved in my doubts section. :blush: