BILLINGSLEY'S THEOREMS ON EMPIRICAL PROCESSES OF STRONG MIXING SEQUENCES
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概要
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Let $¥{x_{j}, -¥infty<j<¥infty¥}$ be a strictly stationary sequence of random variables satisfying some mixing condition with mixing coefficient $¥phi(n)$ or $¥alpha(n)$ . Let $F.(t)$ be the empirical distribution function of $x_{1},¥cdots,$ $x_{¥iota}$ and $Y_{*}(, ¥omega)$ $=n^{1/2}(F_{n}(t, ¥omega)-F(t))$ . In [11, Billingsley proved the weak convergence theorem on $¥{Y_{n}¥}$ under the condition $¥Sigma n^{2}¥phi^{1/2}(n)<¥infty$ . (cf. Theorem 22.1 in [11). Recently, in [5], Sen proved the result under the condition $¥Sigma n¥phi^{1/2}(n)<¥infty$ and in [61 Yokoyama proved it under the condition $¥Sigma ¥alpha^{¥beta}(n)<¥infty(0<¥beta<1/2)$ . In this note, we shall show that Billingsley's theorem remains true under a less restrictive condition $¥alpha(n)=$ $O(n^{-8-¥delta})(¥delta>0)$ . A theorem corresponding to Theorem 22.2 in [11 is also proved (Section 4).
- Yokohama City Universityの論文
- 1975-00-00
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