Counterexamples to Conjecture 25 and Remark 6 of Garrappa–Gerhold–Popolizio–Simon: Global modulus lower bounds in arXiv:2410.11852v4

Conjecture 25 and the question in Remark 6 of Garrappa, Gerhold, Popolizio and Simon, arXiv:2410.11852v4, both have negative answers. For every 10. A Hankel-contour expansion gives this family, while an exact rational certificate supplies the explicit instance (alpha,beta,z)=(3/2,1/2,-115+10i). The Kummer question has the elementary witness M(1/2,-3/2,z)=exp(z)(1-4z/3+4z^2/3).

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Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-11-03
DOI
https://doi.org/10.5281/zenodo.23920556
Primary Topic
Mathematical functions and polynomials
Type
preprint
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preprint

Counterexamples to Conjecture 25 and Remark 6 of Garrappa–Gerhold–Popolizio–Simon: Global modulus lower bounds in arXiv:2410.11852v4

Wenlin Zhang, Haobo Ma
Zenodo (CERN European Organization for Nuclear Research)
Mathematical functions and polynomials
preprint

Counterexamples to Conjecture 25 and Remark 6 of Garrappa–Gerhold–Popolizio–Simon: Global modulus lower bounds in arXiv:2410.11852v4

Wenlin Zhang, Haobo Ma
preprint en

Abstract

Conjecture 25 and the question in Remark 6 of Garrappa, Gerhold, Popolizio and Simon, arXiv:2410.11852v4, both have negative answers. For every 10. A Hankel-contour expansion gives this family, while an exact rational certificate supplies the explicit instance (alpha,beta,z)=(3/2,1/2,-115+10i). The Kummer question has the elementary witness M(1/2,-3/2,z)=exp(z)(1-4z/3+4z^2/3).

Zenodo (CERN European Organization for Nuclear Research)
National University of Singapore (SG)
Mathematical functions and polynomials
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