广义Orlicz空间中最佳多项式算子的扩展
Extension of the Best Polynomial Operator in Generalized Orlicz spaces
AI总结:
本文在广义Orlicz空间中刻画了最佳多值多项式逼近算子,并将其扩展到$L^{ψ^+}(Ω)$,证明了扩展的逐点收敛性。
摘要:
本文研究了Orlicz空间$L^φ(Ω)$中函数的最佳多值多项式逼近算子。我们获得了该算子的刻画,其中涉及$ψ^-$和$ψ^+$,它们是$φ$的左、右导数函数。然后,我们将该算子扩展到$L^{ψ^+}(Ω)$。我们还得到了该扩展的逐点收敛性,其中适应于$L^{ψ^+}(Ω)$的Calderón-Zygmund类$t_m^p(x)$起着重要作用。
英文摘要:
In this paper, we consider the best multivalued polynomial approximation operator for functions in an Orlicz Space $L^φ(Ω)$. We obtain its characterization involving $ψ^-$ and $ψ^+$, which are the left and right derivatives functions of $φ$. And then, we extend the operator to $L^{ψ^+}(Ω)$. We also get pointwise convergence of this extension, where the Calderón-Zygmund class $t_m^p (x)$ adapted to $L^{ψ^+}(Ω)$ plays an important role.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。