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arXiv 1301.2690math.CA
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测度的指数衰减与Tauberian定理

Exponential decay of measures and Tauberian theorems

Ante Mimica

摘要:

通过考虑测度的拉普拉斯变换,研究了$[0,\infty)$上测度的行为.如果有可能将拉普拉斯变换推广到包含虚轴的复半平面上,则测度的尾部将发生指数衰减,并且在一定的假设下,我们证明了衰减率由所谓的收敛横坐标给出,并推广了Nakagawa的结果.在较强的假设下,通过考虑测度的拉普拉斯变换,给出了测度的稠密性态.在没有指数衰减的情况下,我们研究了重尾的出现,并给出了在非局部方程理论中的应用。

英文摘要:

We study behavior of a measure on $[0,\infty)$ by considering its Laplace transform. If it is possible to extend the Laplace transform to a complex half-plane containing the imaginary axis, then the exponential decay of the tail of the measure occurs and under certain assumptions we show that the rate of the decay is given by the so called abscissa of convergence and extend the result of Nakagawa from [Nak05]. Under stronger assumptions we give behavior of density of the measure by considering its Laplace transform. In situations when there is no exponential decay we study occurrence of heavy tails and give an application in the theory of non-local equations.

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