<?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>2026-05-31T02:40:13Z</responseDate><request verb="GetRecord" identifier="oai:riuma.uma.es:10630/15087" metadataPrefix="qdc">https://riuma.uma.es/rest/oai/request</request><GetRecord><record><header><identifier>oai:riuma.uma.es:10630/15087</identifier><datestamp>2026-02-03T11:48:54Z</datestamp><setSpec>com_10630_2254</setSpec><setSpec>col_10630_37959</setSpec></header><metadata><qdc:qualifieddc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:doc="http://www.lyncode.com/xoai" xmlns:qdc="http://dspace.org/qualifieddc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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>Sigma-maps on triangular algebras</dc:title>
   <dc:creator>Sánchez-Ortega, Juana</dc:creator>
   <dc:creator>Repka, Joe</dc:creator>
   <dc:creator>Martín-González, Cándido</dc:creator>
   <dc:subject>Álgebra</dc:subject>
   <dcterms:abstract>Triangular algebras were introduced by Chase in the early 1960s.  He&#xd;
ended up with these structures in the course of his study of the asymmetric&#xd;
behavior of semi-hereditary rings. Since their introduction, triangular algebras&#xd;
have played an important role in the development of ring theory. In the middle/late &#xd;
1990s, several authors undertook the study of derivations and related&#xd;
maps over some families of triangular algebras. &#xd;
Here, we will focus our attention on σ-biderivations and σ-commuting maps&#xd;
of triangular algebras (σ is an automorphism of the algebra). We will introduce&#xd;
and describe a new class of automorphisms of triangular algebras, and provide&#xd;
many classes of triangular algebras whose automorphisms can be determined</dcterms:abstract>
   <dcterms:dateAccepted>2018-01-30T10:00:41Z</dcterms:dateAccepted>
   <dcterms:available>2018-01-30T10:00:41Z</dcterms:available>
   <dcterms:created>2018-01-30T10:00:41Z</dcterms:created>
   <dcterms:issued>2018-01-30</dcterms:issued>
   <dc:type>conference output</dc:type>
   <dc:identifier>https://hdl.handle.net/10630/15087</dc:identifier>
   <dc:language>eng</dc:language>
   <dc:relation>Conferencia: Sigma-maps on triangular algebras</dc:relation>
   <dc:relation>Málaga, España</dc:relation>
   <dc:relation>Junio 2018</dc:relation>
   <dc:rights>open access</dc:rights>
</qdc:qualifieddc>
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