Does infinite norm function use singular value ?
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Hello,
I would like to compute the infinite norm of the 2*2 following system : Q = [1/2+1j*sqrt(3)/2 -1 ; 1 2]
By hand I get :
In Matlab I write :
Q = [1/2+1j*sqrt(3)/2 -1 ; 1 2]
norm(Q,inf)
And I get a result of 3.
Why is the result different between Matlab and that one I calculated by hand?
I guess there is a question of rounding up with Matlab, if that is the case I did not find how to have more significant figures, how to do it?
Thanks,
Jeremy
采纳的回答
Steven Lord
2020-6-5
0 个投票
As stated on the documentation page for the norm function and on Wikipedia, the infinity norm of a matrix is the maximum of its row sums. What you're computing is the 2-norm.
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