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Muckenhoupt Class Weight Decomposition and BMO Distance to Bounded Functions
Proceedings of the Edinburgh Mathematical Society ( IF 0.7 ) Pub Date : 2019-03-25 , DOI: 10.1017/s0013091519000038 Morten Nielsen , Hrvoje Šikić
Proceedings of the Edinburgh Mathematical Society ( IF 0.7 ) Pub Date : 2019-03-25 , DOI: 10.1017/s0013091519000038 Morten Nielsen , Hrvoje Šikić
We study the connection between the Muckenhoupt A p weights and bounded mean oscillation (BMO) for general bases for ℝd . New classes of bases are introduced that allow for several deep results on the Muckenhoupt weights–BMO connection to hold in a very general form. The John–Nirenberg type inequality and its consequences are valid for the new class of Calderón–Zygmund bases which includes cubes in ℝd , but also the basis of rectangles in ℝd . Of particular interest to us is the Garnett–Jones theorem on the BMO distance, which is valid for cubes. We prove that the theorem is equivalent to the newly introduced A 2 -decomposition property of bases. Several sufficient conditions for the theorem to hold are analysed as well. However, the question whether the theorem fully holds for rectangles remains open.
中文翻译:
Muckenhoupt 类权重分解和 BMO 到有界函数的距离
我们研究 Muckenhoupt 之间的联系一种 p ℝ 的一般基的权重和有界平均振荡 (BMO)d . 引入了新的基类,允许在 Muckenhoupt 权重-BMO 连接上以非常一般的形式保持几个深入的结果。John-Nirenberg 类型不等式及其结果适用于新的 Calderón-Zygmund 基类,其中包括 ℝ 中的立方体d ,也是ℝ中矩形的基础d . 我们特别感兴趣的是关于 BMO 距离的 Garnett-Jones 定理,它对立方体有效。我们证明该定理等价于新引入的一种 2 -碱基的分解特性。还分析了定理成立的几个充分条件。然而,该定理是否完全适用于矩形的问题仍然悬而未决。
更新日期:2019-03-25
中文翻译:
Muckenhoupt 类权重分解和 BMO 到有界函数的距离
我们研究 Muckenhoupt 之间的联系