Vv. Andrievskii et al., Simultaneous approximation and interpolation of functions on continua in the complex plane, J MATH P A, 80(4), 2001, pp. 373-388
We construct polynomial approximations of Dzjadyk type (in terms of the k-t
h modulus of continuity, k greater than or equal to 1) for analytic functio
ns defined on a continuum E in the complex plane, which simultaneously inte
rpolate at given points of E. Furthermore, the error in this approximation
is decaying e(-cn alpha) strictly inside E, where c and alpha are positive
constants independent of the degree n of the as e approximating polynomial.
(C) 2001 Editions scientifiques et medicales Elsevier SAS.