On interval-subgradient and no-good cuts

Interval-gradient cuts are (nonlinear) valid inequalities derived from continuously differentiable nonconvex constraints. In this paper we define interval-subgradient cuts, a generalization to nondifferentiable constraints, and show that no-good cuts with 1-norm are a special case of interval-subgradient cuts. We then briefly discuss what happens if other norms are used.