Random polynomials having few or no real zeros

Author:

Dembo Amir,Poonen Bjorn,Shao Qi-Man,Zeitouni Ofer

Abstract

Consider a polynomial of large degree n n whose coefficients are independent, identically distributed, nondegenerate random variables having zero mean and finite moments of all orders. We show that such a polynomial has exactly k k real zeros with probability n b + o ( 1 ) n^{-b+o(1)} as n n \rightarrow \infty through integers of the same parity as the fixed integer k 0 k \ge 0 . In particular, the probability that a random polynomial of large even degree n n has no real zeros is n b + o ( 1 ) n^{-b+o(1)} . The finite, positive constant b b is characterized via the centered, stationary Gaussian process of correlation function s e c h ( t / 2 ) {\mathrm {sech}} (t/2) . The value of b b depends neither on k k nor upon the specific law of the coefficients. Under an extra smoothness assumption about the law of the coefficients, with probability n b + o ( 1 ) n^{-b+o(1)} one may specify also the approximate locations of the k k zeros on the real line. The constant b b is replaced by b / 2 b/2 in case the i.i.d. coefficients have a nonzero mean.

Publisher

American Mathematical Society (AMS)

Subject

Applied Mathematics,General Mathematics

Reference34 articles.

1. Institute of Mathematical Statistics Lecture Notes---Monograph Series;Adler, Robert J.,1990

2. Probability and Mathematical Statistics;Bharucha-Reid, A. T.,1986

3. [BP]blochpolya Bloch, A.; Pólya, G. On the roots of certain algebraic equations. Proc. London Math. Soc. 33 (1932), 102–114.

4. Probability and Mathematical Statistics;Csörgő, M.,1981

5. Applications of Mathematics (New York);Dembo, Amir,1998

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