Generalization of the Fundamental Theorem on Subadditive Functions

Generalization of the Fundamental Theorem on Subadditive Functions
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DOI:
10.1017/s030500410003646x
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发表时间:
1962-04
影响因子:
0.8
通讯作者:
J. Hammersley
J. Hammersley
中科院分区:
数学2区
文献类型:
--
作者:
J. Hammersley

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结果说明。设g(x)是关于真实的变量x的给定真实的有限函数。令F(g)表示所有满足的真实的勒贝格可测有限(尽管可能无界)函数f(x)的类,其中η可以依赖于f令F* 表示所有存在且满足− ∞ ≤l<+∞的真实的f(x)的类。
Statement of results. Let g(x) be a given real finite function of a real variable x. Let F(g) denote the class of all real Lebesgue-measurable and finite (though possibly unbounded) functions f(x) which satisfy where η may depend upon f Let F* denote the class of all real f(x) such that exists and satisfies − ∞ ≤l<+∞.