The initial gradient is bounded by smoothness times the distance to the minimizer set.
theorem
V7.Stage5AboveTwoLowerS5F.minimizer_gradient_zero
{p : ℝ}
{d : ℕ}
{x0 : Point d}
(inst : PositiveInstance p d x0)
{xstar : Point d}
(hxstar : xstar ∈ MinimizerSet inst.oracle)
: