<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><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>2026-06-08T00:02:51Z</responseDate><request verb="GetRecord" identifier="oai:docta.ucm.es:20.500.14352/95294" metadataPrefix="qdc">https://docta.ucm.es/rest/oai/request</request><GetRecord><record><header><identifier>oai:docta.ucm.es:20.500.14352/95294</identifier><datestamp>2025-08-28T14:46:27Z</datestamp><setSpec>com_20.500.14352_14</setSpec><setSpec>col_20.500.14352_15</setSpec></header><metadata><qdc:qualifieddc xmlns:qdc="http://dspace.org/qualifieddc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://purl.org/dc/elements/1.1/ http://dublincore.org/schemas/xmls/qdc/2006/01/06/dc.xsd http://purl.org/dc/terms/ http://dublincore.org/schemas/xmls/qdc/2006/01/06/dcterms.xsd http://dspace.org/qualifieddc/ http://www.ukoln.ac.uk/metadata/dcmi/xmlschema/qualifieddc.xsd">
   <dc:title>Irregularity Index and Spherical Densities of the Penta-Sierpinski Gasket</dc:title>
   <dc:creator>Mera Rivas, María Eugenia</dc:creator>
   <dc:creator>Morán Cabré, Manuel</dc:creator>
   <dcterms:abstract>We compute the centred Hausdorff measure, Cs(P) ∼ 2.44, and the packing measure, Ps(P) ∼ 6.77, of the penta-Sierpinski gasket, P, with explicit error bounds. We also compute the full spectra of asymptotic spherical densities of these measures in P, which, in contrast with that of the Sierpinski gasket, consists of a unique interval. These results allow us to compute the irregularity index of P, I(P) ∼ 0.6398, which we define for any self-similar set E with open set condition as I(E) = 1 − (Cs(E)/Ps(E)) .</dcterms:abstract>
   <dcterms:dateAccepted>2024-01-25T09:27:16Z</dcterms:dateAccepted>
   <dcterms:available>2024-01-25T09:27:16Z</dcterms:available>
   <dcterms:created>2024-01-25T09:27:16Z</dcterms:created>
   <dcterms:issued>2023</dcterms:issued>
   <dc:type>journal article</dc:type>
   <dc:identifier>https://hdl.handle.net/20.500.14352/95294</dc:identifier>
   <dc:identifier>1660-5446</dc:identifier>
   <dc:identifier>10.1007/s00009-023-02528-6</dc:identifier>
   <dc:identifier>1660-5454</dc:identifier>
   <dc:language>eng</dc:language>
   <dc:relation>(PR108/20-14)</dc:relation>
   <dc:relation>Mera, M.E., Morán, M. Irregularity Index and Spherical Densities of the Penta-Sierpinski Gasket. Mediterr. J. Math. 20, 322 (2023). https://doi.org/10.1007/s00009-023-02528-6</dc:relation>
   <dc:rights>http://creativecommons.org/licenses/by-nc-nd/4.0/</dc:rights>
   <dc:rights>restricted access</dc:rights>
   <dc:rights>Attribution-NonCommercial-NoDerivatives 4.0 International</dc:rights>
   <dc:publisher>Springer Nature</dc:publisher>
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