摘要 :
Let {Ln}n∈s be positive linear operators in LI, I=[0, 1] or [0, ∞). This paper considers their variants in Lp（I×I）Ln,m（F; x, y）=Ln（Lm（F（u, v）; y）; x）=Lm（Ln（F（u, v）; x）; y）, n, m∈N.The characterization problem f...
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Let {Ln}n∈s be positive linear operators in LI, I=[0, 1] or [0, ∞). This paper considers their variants in Lp（I×I）Ln,m（F; x, y）=Ln（Lm（F（u, v）; y）; x）=Lm（Ln（F（u, v）; x）; y）, n, m∈N.The characterization problem for these operators is solved which gives the inverse theorems in Lp for multidimensional Bernstein type operators.
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