Isolated Zeros for Brownian Motion with Variable Drift
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1. | Title | Title of document | Isolated Zeros for Brownian Motion with Variable Drift |
2. | Creator | Author's name, affiliation, country | Tonci Antunovic; University of California Berkeley; United States |
2. | Creator | Author's name, affiliation, country | Krzysztof Burdzy; University of Washington; United States |
2. | Creator | Author's name, affiliation, country | Yuval Peres; Microsoft Research; United States |
2. | Creator | Author's name, affiliation, country | Julia Ruscher; Technische Universität Berlin; Germany |
3. | Subject | Discipline(s) | |
3. | Subject | Keyword(s) | Brownian motion; Hölder continuity; Cantor function; isolated zeros; Hausdorff dimension |
3. | Subject | Subject classification | 60J65; 26A16; 26A30; 28A78 |
4. | Description | Abstract | It is well known that standard one-dimensional Brownian motion $B(t)$ has no isolated zeros almost surely. We show that for any $\alpha<1/2$ there are alpha-Hölder continuous functions $f$ for which the process $B-f$ has isolated zeros with positive probability. We also prove that for any continuous function $f$, the zero set of $B-f$ has Hausdorff dimension at least $1/2$ with positive probability, and $1/2$ is an upper bound on the Hausdorff dimension if $f$ is $1/2$-Hölder continuous or of bounded variation. |
5. | Publisher | Organizing agency, location | |
6. | Contributor | Sponsor(s) | |
7. | Date | (YYYY-MM-DD) | 2011-09-27 |
8. | Type | Status & genre | Peer-reviewed Article |
8. | Type | Type | |
9. | Format | File format | |
10. | Identifier | Uniform Resource Identifier | http://ejp.ejpecp.org/article/view/927 |
10. | Identifier | Digital Object Identifier | 10.1214/EJP.v16-927 |
11. | Source | Journal/conference title; vol., no. (year) | Electronic Journal of Probability; Vol 16 |
12. | Language | English=en | |
14. | Coverage | Geo-spatial location, chronological period, research sample (gender, age, etc.) | |
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