Variance of partial sums of stationary sequences
Variance of partial sums of stationary sequences
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平稳序列部分和的方差
DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
S. Utev
中科院分区:
文献类型:
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作者:
George Deligiannidis;S. Utev
Let X1,X2,… be a centred sequence of weakly stationary random variables with spectral measure F and partial sums Sn=X1+⋯+Xn. We show that var(Sn) is regularly varying of index γ at infinity, if and only if G(x):=∫x−xF(dx) is regularly varying of index 2−γ at the origin (0