Large deviations for additive functionals of Markov chains
著者
書誌事項
Large deviations for additive functionals of Markov chains
（Memoirs of the American Mathematical Society, no. 1070）
American Mathematical Society, c2013
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注記
"March 2014, volume 228, number 1070 (second of 5 numbers)"
Includes bibliographical references (p. 107-108)
内容説明・目次
内容説明
For a Markov chain {X?} with general state space S and f:S?R ?, the large deviation principle for {n ?1 ? ??=1 f(X?)} is proved under a condition on the chain which is weaker than uniform recurrence but stronger than geometric recurrence and an integrability condition on f , for a broad class of initial distributions. This result is extended to the case when f takes values in a separable Banach space. Assuming only geometric ergodicity and under a non-degeneracy condition, a local large deviation result is proved for bounded f. A central analytical tool is the transform kernel, whose required properties, including new results, are established. The rate function in the large deviation results is expressed in terms of the convergence parameter of the transform kernel.
目次
Introduction
The transform kernels Kg and their convergence parameters
Comparison of ?(g) and ? ? (g)
Proof of Theorem 1
A characteristic equation and the analyticity of ? f : the case when P has an atom C?S satisfying ? (C)>0
Characteristic equations and the analyticity of ? f: the general case when P is geometrically ergodic
Differentiation formulas for u g and ? f in the general case and their consequences
Proof of Theorem 2
Proof of Theorem 3
Examples
Applications to an autoregressive process and to reflected random walk
Appendix
Background comments
References
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