A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is
We construct multivariate polynomials attached to a functionfofmvariables,m≥2, which approximatefwith Jackson-type rate involving a multivariate Ditzian-Totikω2φ-modulus and preserve some natural kinds of multivariate monotonicity and convexity of function. The result extends the bivariate case in Gal (2002), but does not follow straight from it and requires a careful calculation.doi:10.1155/s0161171204306137 fatcat:poo3dra4qfgwjdiy3wvt3mmame