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A lower bound for the variance of real zeros of random polynomials

 

作者: V. Thangaraj,   N. Renganathan,  

 

期刊: Stochastic Analysis and Applications  (Taylor Available online 1990)
卷期: Volume 8, issue 4  

页码: 463-481

 

ISSN:0736-2994

 

年代: 1990

 

DOI:10.1080/07362999008809219

 

出版商: Marcel Dekker, Inc.

 

数据来源: Taylor

 

摘要:

Letbe a random id algebraic polynomial where {ai} is a sequence of independent identically distributed ( iid ) standard normal random variables. In this paper we have obtained a lower bound for the variance of the number of real zeros .of the random algebraic polynomials Qn(x). We have shown that the bound isfor sufficiently large n. Our estimate istimes that of Maslova (1974). We have also presented a graph and a comparison table illustrating the values of variances

 

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