On Min-Max affine approximants of convex or concave real valued functions from ${\mathbb{R}}^k$, Chebyshev equioscillation and graphics

Steven B. Damelin, David L. Ragozin, Michael Werman

We study Min-Max affine approximants of a continuous convex or concave function $f:\Delta \subset {\mathbb{R}}^k\to \mathbb{R}$ where $\Delta$ is a convex compact subset of $\mathbb R^…