supremum and infimum - Why is the lagrange dual function concave

In a book I'm reading (Convex Optimization by Boyd and Vandenberghe) it says I'm struggling to understand the last sentence. Why can one conclude concavity from having a pointwise infimum of a fam

CSE 203B: Convex Optimization Week 6 Discuss Session - ppt download

Relaxations and duality for multiobjective integer programming

Concave regression: value-constrained estimation and likelihood

Evenly Convex Functions

PDF) Optimal investment problem under behavioral setting: A

CSE 203B: Convex Optimization Week 6 Discuss Session - ppt download

A very brief introduction to convex optimization -- Part 2

Please explain the intuition behind the dual problem in

A linear-time algorithm for minimizing the ratio of quadratic

12: The Lagrangian dual seen as a piecewise linear concave