The expected number of zeros of a random system of $p$-adic polynomials
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1. | Title | Title of document | The expected number of zeros of a random system of $p$-adic polynomials |
2. | Creator | Author's name, affiliation, country | Steven N. Evans; University of California at Berkeley |
3. | Subject | Discipline(s) | |
3. | Subject | Keyword(s) | co-area formula, Kac-Rice formula, local field, Gaussian,$q$-binomial formula, random matrix |
3. | Subject | Subject classification | Primary: 60B99, 30G15; Secondary: 11S80, 30G06 |
4. | Description | Abstract | We study the simultaneous zeros of a random family of $d$ polynomials in $d$ variables over the $p$-adic numbers. For a family of natural models, we obtain an explicit constant for the expected number of zeros that lie in the $d$-fold Cartesian product of the $p$-adic integers. Considering models in which the maximum degree that each variable appears is $N$, this expected value is $$ p^{d \lfloor \log_p N \rfloor} \left(1 + p^{-1} + p^{-2} + \cdots + p^{-d}\right)^{-1} $$ for the simplest such model. |
5. | Publisher | Organizing agency, location | |
6. | Contributor | Sponsor(s) | Supported in part by NSF grant DMS-0405778. Part of the research was conducted during a visit to the American Institute of Mathematics for a Workshop on Random Analytic Functions. |
7. | Date | (YYYY-MM-DD) | 2006-11-30 |
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/1230 |
10. | Identifier | Digital Object Identifier | 10.1214/ECP.v11-1230 |
11. | Source | Journal/conference title; vol., no. (year) | Electronic Communications in Probability; Vol 11 |
12. | Language | English=en | |
14. | Coverage | Geo-spatial location, chronological period, research sample (gender, age, etc.) | |
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