Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4606861 | Journal of Approximation Theory | 2016 | 19 Pages |
Abstract
We study Cauchy means of Dirichlet polynomials ∫R|∑n=1N1nσ+ist|2qdtπ(t2+1). These integrals were investigated when q=1,σ=1,s=1/2q=1,σ=1,s=1/2 by Wilf, using integral operator theory and Widom’s eigenvalue estimates. We show the optimality of some upper bounds obtained by Wilf. We also obtain new estimates for the case q≥1q≥1, σ≥0σ≥0 and s>0s>0. We complete Wilf’s approach by relating it with other approaches (having notably connection with Brownian motion), allowing simple proofs, and also prove new results.
Related Topics
Physical Sciences and Engineering
Mathematics
Analysis
Authors
Michel J.G. Weber,