Evaluating Lebesgue constants by Chebyshev polynomial meshes on cube, simplex and ball

L. Bialas-Ciez, D. J. Kenne, A. Sommariva +1

We show that product Chebyshev polynomial meshes can be used, in a fully discrete way, to evaluate with rigorous error bounds the Lebesgue constant, i.e. the maximum of the Lebesgu…