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ULTRA-UNIVERSAL MODELS

 

作者: Colin Naturman,   Henry Rose,  

 

期刊: Quaestiones Mathematicae  （Taylor Available online 1992）
卷期: Volume 15, issue 2  

页码: 189-195

 

ISSN:1607-3606

 

年代: 1992

 

DOI:10.1080/16073606.1992.9631683

 

出版商: Taylor & Francis Group

 

关键词: 03C50;03C52

 

数据来源: Taylor

 

摘要:

The concept of ultra-universal algebras in varieties is generalized to models of first order theories. Characterizations of theories which have ulta-universal models are found and general examples of ultra-universal models are investigated. In particular we show that a theory has an ultra-universal model iff it is consistent and its class of models satisfies the joint embedding property.

 

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