Resumen de An improved upper bound on the Lebesgue constant of Berrut�s rational interpolation operator

Ren-Jiang Zhang

• In approximation theory, the Lebesgue constant of an interpolation operator plays an important role. The Lebesgue constant of Berrut�s interpolation operator has been studied recently. In the present work, an improved upper bound for equidistant nodes is given.