Convergence of integral functionals of one-dimensional diffusions
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1. | Title | Title of document | Convergence of integral functionals of one-dimensional diffusions |
2. | Creator | Author's name, affiliation, country | Aleksandar Mijatovic; Imperial College; United Kingdom |
2. | Creator | Author's name, affiliation, country | Mikhail Urusov; Universität Duisburg-Essen; Germany |
3. | Subject | Discipline(s) | |
3. | Subject | Keyword(s) | Integral functional; one-dimensional diffusion; local time; Bessel process; Ray-Knight theorem; Williams theorem |
3. | Subject | Subject classification | 60H10; 60J60 |
4. | Description | Abstract | In this paper we describe the pathwise behaviour of the integral functional $\int_0^t f(Y_u)\,du$ for any $t\in[0,\zeta]$, where $\zeta$ is (a possibly infinite) exit time of a one-dimensional diffusion process $Y$ from its state space, $f$ is a nonnegative Borel measurable function and the coefficients of the SDE solved by $Y$ are only required to satisfy weak local integrability conditions. Two proofs of the deterministic characterisation of the convergence of such functionals are given: the problem is reduced in two different ways to certain path properties of Brownian motion where either the Williams theorem and the theory of Bessel processes or the first Ray-Knight theorem can be applied to prove the characterisation. As a simple application of the main results we give a short proof of Feller's test for explosion. |
5. | Publisher | Organizing agency, location | |
6. | Contributor | Sponsor(s) | London Mathematical Society and Mathematisches Forschungsinstitut Oberwolfach |
7. | Date | (YYYY-MM-DD) | 2012-12-16 |
8. | Type | Status & genre | Peer-reviewed Article |
8. | Type | Type | |
9. | Format | File format | |
10. | Identifier | Uniform Resource Identifier | http://ecp.ejpecp.org/article/view/1825 |
10. | Identifier | Digital Object Identifier | 10.1214/ECP.v17-1825 |
11. | Source | Journal/conference title; vol., no. (year) | Electronic Communications in Probability; Vol 17 |
12. | Language | English=en | en |
14. | Coverage | Geo-spatial location, chronological period, research sample (gender, age, etc.) | |
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