hown to express ||v||^3 in cvx?
help pow_pos
pow_pos Power of positive part.
pow_pos(X,P) = POS(X).^P = MAX(X,0).^P.
Both P and X must be real, and P must be greater than or equal to 1.Disciplined convex programming information: pow_pos(X,P) is convex and nondecreasing in X; so when used in CVX expressions, X must be convex. P must be constant, real, and greater than or equal to 1.
Accoeding to your suggestion, the answer is pow_pos(norm(v),3)?
Yes. Presuming of course that v
is affine.