Does anyone know a reference to the answer if unconstrained integer convex optimization problem (i.e. \min_{x\in Z^N} F(x), F is convex and N is NOT fixed) is NP-hard?
Thank you in advance.
Does anyone know a reference to the answer if unconstrained integer convex optimization problem (i.e. \min_{x\in Z^N} F(x), F is convex and N is NOT fixed) is NP-hard?
Thank you in advance.