Abstract: It is introduced that ω_φ²λ(f, t)_w and apply it to study the weighted approximation on Szász operators, and give a pointwise results which expands some previous results.

Key words: Szász-Mirakjan operator, weighted modulus, weighted main-part modulus

摘要： 利用ω_φ²λ(f, t)_w研究Szász-Mirakjan算子的加权点态逼近，得到一个更完美、广泛的结果。

关键词: Szász-Mirakjan算子, 加权光滑模, 加权主部光滑模