The K-level crossings of a random algebraic polynomial with dependent coefficients

Details The K-level crossings of a random algebraic polynomial with dependent coefficients The K-level crossings of a random algebraic polynomial with dependent coefficients

2009-12-21

arxiv.org/abs/0912.4065v1

Mathematics

Probability

Scientific paper

For a random polynomial with standard normal coefficients, two cases of the K-level crossings have been considered by Farahmand. When the coefficients are independent, Farahmand was able to derive an asymptotic value for the expected number of level crossings, even if K is allowed to grow to infinity. Alternatively, it was shown that when the coefficients have a constant covariance, the expected number of level crossings is reduced by half. In this paper we are interested in studying the behavior for dependent standard normal coefficients where the covariance is decaying and no longer constant. Using techniques similar to those of Farahmand, we will be able to show that for a wide range of covariance functions behavior similar to the independent case can be expected.

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