Chebyshev constants for the unit circle Academic Article uri icon


  • It is proven that for any system of n points z1,..., z n on the (complex) unit circle, there exists another point z of norm 1, such that Two proofs are presented: one uses a characterization of equioscillating rational functions, while the other is based on Bernstein's inequality. © 2012 London Mathematical Society.

author list (cited authors)

  • Ambrus, G., Ball, K. M., & Erdélyi, T.

citation count

  • 10

publication date

  • October 2012