Abstract
We consider large deviation principles (LDPs) for random walks and renewal compound processes. We expose and analyze the approaches to finding existence conditions for “exact” large deviation principles valid under minimal moment conditions. By exact large deviation principles we understand statements on the existence of exact limits for the asymptotics of the probabilities under study and the values of these limits rather than on the existence of upper and lower limits for these asymptotics, as for the ordinary large deviation principles. In addition to the known results, the new versions of conditions are found that ensure the existence of exact LDPs under the minimal Cramér’s moment condition. The article is based on the text of a talk prepared for a conference cancelled because of the pandemic.
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Notes
In Definition 1 of [1] the condition of continuity of \( I(f) \) at the points of \( \partial B_{} \) with respect to the distance \( \rho_{𝔻}(f^{\prime},g^{\prime}) \) is omitted.
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Acknowledgment
The author is grateful to A.A. Mogulskii and A.V. Logachev for useful discussions.
Funding
The author was supported by the Program of Basic Scientific Research of the Siberian Branch of the Russian Academy of Sciences (Grant no. I.1.3, Project 0314–2016–0008) as well as funded by the Russian Foundation for Basic Research (Grant no. 18–01–00101a).
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Translated from Sibirskii Matematicheskii Zhurnal, 2022, Vol. 63, No. 1, pp. 58–76. https://doi.org/10.33048/smzh.2022.63.104
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Borovkov, A.A. On the Existence Conditions for Exact Large Deviation Principles. Sib Math J 63, 48–64 (2022). https://doi.org/10.1134/S0037446622010049
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DOI: https://doi.org/10.1134/S0037446622010049
Keywords
- random walks
- renewal compound processes
- large deviation principle
- extended large deviation principle
- exact large deviation principle
- thin boundaries