Alternating sequences with nonpositive operators

Alternating sequences with nonpositive operators
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具有非正运算符的交替序列

DOI:
10.1090/s0002-9939-1988-0943791-8
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发表时间:
1988
期刊:
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影响因子:
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通讯作者:
M. Akcoglu
M. Akcoglu
中科院分区:
--
文献类型:
--
作者:
M. Akcoglu

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设(Tn)是作用于有限测度空间上复值函数的线性算子序列。假设每个Tn缩并所有p-norm, 1 < p < oo(即IlTnllp < 1)。结果表明,a.e. limn . T1j…TnTn……T1f存在于每一个Lp函数f, 1 < p < 0。
Let (Tn) be a sequence of linear operators acting on complex valued functions on a a-finite measure space. Assume that each Tn contracts all the p-norms, 1 < p < oo (i.e. IlTnllp < 1). It is shown that a.e. limn T1j ... TnTn... T1f exists for each Lp function f, 1 < p < oo.