<?xml version="1.0" encoding="UTF-8"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-10-24T00:14:39Z</responseDate><request verb="GetRecord" identifier="oai:gumushane-rdlopen.rawdatalibrary.net:gumushane/15099" metadataPrefix="oai_dc">https://gumushane-rdlopen.rawdatalibrary.net/oai/request</request><GetRecord><record><header><identifier>oai:gumushane-rdlopen.rawdatalibrary.net:gumushane/15099</identifier><datestamp>2026-10-23T21:04:33Z</datestamp><setSpec>openaire</setSpec><setSpec>com_gumushane_10000</setSpec><setSpec>col_gumushane_10001</setSpec><setSpec>com_gumushane_10007</setSpec><setSpec>col_gumushane_10171</setSpec></header><metadata><oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"><dc:title>On some properties of hyper-bessel and related functions</dc:title><dc:creator>Aktaş, I.</dc:creator><dc:subject>Decreasing and increasing functions</dc:subject><dc:subject>Hadamard product representation</dc:subject><dc:subject>Hyper-Bessel function</dc:subject><dc:subject>Log-concavity</dc:subject><dc:subject>Modified hyper-Bessel function</dc:subject><dc:description>In this study, by using the Hadamard product representation of the hyper- Bessel function and basic concepts in mathematics we investigate the sign of the hyper- Bessel function x → J                             αd                              (x) on some sets. Also, we show that the function x → J                             αd                              (x) is a decreasing function on [0, J                             αd                             ,1), and the function is an increasing function on (0,∞), where j                             αd                             ,1 and II                             αd                              denote the first positive zero of the function J                             αd                             (x) and modified hyper-Bessel function, respectively. In addition, we prove the strictly log-concavity of the functions J                             αd                             (x) and J                             αd                             (x) on some sets. Moreover, we give some illustrative examples regarding our main results.</dc:description><dc:publisher>Isik University</dc:publisher><dc:date>2019</dc:date><dc:type>Article</dc:type><dc:identifier>https://rdlopen.rawdatalibrary.net/r/gumushane/15099</dc:identifier><dc:identifier>2146-1147</dc:identifier><dc:language>en</dc:language><dc:relation>Turkish World Mathematical Society Journal of Applied and Engineering Mathematics</dc:relation><dc:rights>info:eu-repo/semantics/closedAccess</dc:rights><dc:type>info:eu-repo/semantics/article</dc:type><dc:identifier>https://gumushane-rdlopen.rawdatalibrary.net/tr/items/gumushane/15099</dc:identifier></oai_dc:dc></metadata></record></GetRecord></OAI-PMH>