Based on that, I will declare this problem to be non-convex.,
In the future, please show the code which resulted in the error message you show, not a different code. The code you show does not declare r_iA as a variable.
Based on that, I will declare this problem to be non-convex.,
In the future, please show the code which resulted in the error message you show, not a different code. The code you show does not declare r_iA as a variable.