<?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>2026-10-19T01:02:12Z</responseDate><request verb="GetRecord" identifier="oai:ebyu-rdlopen.rawdatalibrary.net:ebyu/14519" metadataPrefix="oai_dc">https://ebyu-rdlopen.rawdatalibrary.net/oai/request</request><GetRecord><record><header><identifier>oai:ebyu-rdlopen.rawdatalibrary.net:ebyu/14519</identifier><datestamp>2026-10-18T20:43:07Z</datestamp><setSpec>openaire</setSpec><setSpec>driver</setSpec><setSpec>com_ebyu_10000</setSpec><setSpec>col_ebyu_10001</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>Helicoidal surfaces in the three dimensional simply isotropic space 〉31</dc:title><dc:creator>Karacan, Murat Kemal</dc:creator><dc:creator>Yoon, Daewon</dc:creator><dc:creator>Kiziltug, Sezai</dc:creator><dc:subject>Helicoidal surfaces</dc:subject><dc:subject>Laplacian operator</dc:subject><dc:subject>Simply isotropic space</dc:subject><dc:description>In this paper, we classify helicoidal surfaces in the three dimensional simply isotropic space 〉31 satisfying some algebraic equations in terms of the coordinate functions and the Laplacian operators with respect to the first, the second and the third fundamental formof the surface. We also give explicit forms of these surfaces.</dc:description><dc:publisher>Tamkang University</dc:publisher><dc:date>2017</dc:date><dc:type>Article</dc:type><dc:identifier>https://rdlopen.rawdatalibrary.net/r/ebyu/14519</dc:identifier><dc:identifier>https://doi.org/10.5556/j.tkjm.48.2017.2200</dc:identifier><dc:identifier>0049-2930</dc:identifier><dc:language>en</dc:language><dc:relation>Tamkang Journal of Mathematics</dc:relation><dc:rights>info:eu-repo/semantics/openAccess</dc:rights><dc:type>info:eu-repo/semantics/article</dc:type><dc:identifier>https://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/14519</dc:identifier></oai_dc:dc></metadata></record></GetRecord></OAI-PMH>