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Periodica Mathematica Hungarica - Let $$\mathbb N$$ be the set of positive integers, and denote by $$\begin{aligned} \lambda (A)=\inf \{t>0:\sum _{a\in A} a^{-t}<\infty \}...  相似文献   
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In this paper we give necessary and sufficient conditions for the block sequence of the set X = {x 1 < x 2 < … < x n < …} ⊂ ℕ to have an asymptotic distribution function in the form x λ.  相似文献   
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Transport in Porous Media - Gaseous flow through ultra-tight porous media, e.g. shale and some high-performance insulation materials, is often rarefied, invalidating an analysis by the continuum...  相似文献   
4.
Distribution functions of ratio block sequences formed from sequences of positive integers are investigated in the paper. We characterize the case when the set of all distribution functions of a ratio block sequence contains c 0, the greatest possible distribution function. Presented results complete some previously published results. Supported by grant MSM 6198898701, and VEGA no. 1/4006/07.  相似文献   
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