APPROXIMATIONS IN SEVERAL VARIABLES WITH FREUD-TYPE AND Ap-WEIGHTS

作者：Nguyen Xuan Ky^*

来源：Studia Scientiarum Mathematicarum Hungarica, 2012, 49(2): 139-155.

DOI：10.1556/SScMath.49.2012.2.1193

• Multivariate approximations
• Freud-type weights
• Ap-weights

We present direct (Jackson-type) and converse (Bernstein-Stechkin-type) theorems for polynomial approximations with Freud-type weights and trigonometric approximations with A(p)-weights, in the case of several variables.

• 出版日期2012-6