Hessian Matrix Economics: Curvature and Concavity Tests
Hessian matrix economics explains how second derivatives test curvature, concavity, convexity, and local optima in multivariable economic models.
Hessian Matrix
Bordered Hessian: Second-Order Conditions
Bordered Hessian analysis checks second-order conditions in constrained optimization by testing curvature along feasible directions, not across all possible movements.