Hi, everyone! The variable and objective function are as follows,how to express the objective in CVX?

Thank you for your time!

variable: **v(1,N)**

objective: **minimize ( ||v[N+1]||^2 - ||v[1]||^2)**

Hi, everyone! The variable and objective function are as follows,how to express the objective in CVX?

Thank you for your time!

variable: **v(1,N)**

objective: **minimize ( ||v[N+1]||^2 - ||v[1]||^2)**

It is impossible by dimension.

http://ask.cvxr.com/t/why-isnt-cvx-accepting-my-model-read-this-first/570/21

Thank you for your reply !

the dimension of v is declared as N , hence v[N+1] is impossible.

Thank you very much!

But if the dimension of **v** is **N+1**, how can I express the objective function: **min ||v[N+1]||^2- ||v[1]||^2** ?

It is not convex.

I get it, thank you!