Cubic over quad constraint

Hi Michal,

Many thanks for your prompt reply and kind help. I have solved the problem based on your advice.

Yet I have two additional questions seeking for insights:

  1. Actually for my problem, the variable-x in the equation is expressed as a norms(w, 2, 2), my current solution is to redefine vector z = norms(w, 2, 2); and further define s = z^3/y^2. As such, I have introduced two more vectors to solve the problem, and I have used a for loop for the element-wise rotated-lorentz constraint, which apprears to be complicated. So I wonder if there is anything like quad_over_lin to express cubic_over_quad, in a more efficient and graceful manner.

  2. You mentioned that “(n+1)-power-over-n-power should be representable by iterating quad-over-lins”, I wonder if you refer to the inherent mechnism regarding the CVX itself that has nothing to do with users, or we can write our own code to implement the quad_over_lin iteration towards cubic_over_quad.

Thanks a lot.