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arXiv 0709.4332math.CA
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积分型John-Nirenberg不等式的一个精确结果

Sharp results in the integral-form John--Nirenberg inequality

L. Slavin, V. Vasyunin

摘要:

我们考虑了基于$L^2$的BMO的强形式的John-Nirenberg不等式。我们构造显式贝尔曼函数的不等式中的连续和并矢设置,并获得尖锐的常数以及精确的范围上的不等式的有效性,这两个以前未知的。这两种情况的结果有很大的不同。本文不仅给出了这种显式计算的另一个例子,而且还提出了贝尔曼函数方法作为一个清晰的步骤序列,适用于各种各样的应用。

英文摘要:

We consider the strong form of the John-Nirenberg inequality for the $L^2$-based BMO. We construct explicit Bellman functions for the inequality in the continuous and dyadic settings and obtain the sharp constant as well as the precise bound on the inequality's range of validity, both previously unknown. The results for the two cases are substantially different. The paper not only gives another instance in the short list of such explicit calculations, but also presents the Bellman function method as a sequence of clear steps, adaptable to a wide variety of applications.

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。

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