<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/">
<title>Notas de Matemática - Nº 271</title>
<link href="http://www.saber.ula.ve/handle/123456789/30654" rel="alternate"/>
<subtitle>2009</subtitle>
<id>http://www.saber.ula.ve/handle/123456789/30654</id>
<updated>2026-05-27T12:22:35Z</updated>
<dc:date>2026-05-27T12:22:35Z</dc:date>
<entry>
<title>Envelopes of commutative rings</title>
<link href="http://www.saber.ula.ve/handle/123456789/30655" rel="alternate"/>
<author>
<name>Parra, Rafael</name>
</author>
<author>
<name>Saorin, Manuel</name>
</author>
<id>http://www.saber.ula.ve/handle/123456789/30655</id>
<updated>2018-03-15T02:01:54Z</updated>
<published>2010-03-18T18:41:01Z</published>
<summary type="text">Envelopes of commutative rings
Parra, Rafael; Saorin, Manuel
Given a significative class F of commutative rings, we study the precise conditions under which a commutative ring R has an F-envelope. A full answer is obtained when F is the class of fields, semisimple commutative rings or integral domains. When 
F is the class of Noetherian rings, we give a full answer when the Krull dimension of R is zero and when the envelope is required to be epimorphic. The general problem is reduced to identifying the class of non-Noetherian rings having a monomorphic Noetherian envelope, which we conjecture is the empty class.
</summary>
<dc:date>2010-03-18T18:41:01Z</dc:date>
</entry>
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