Covering Morphisms in Categories of Relational Algebras

被引：3
|
作者：
Clementino, Maria Manuel [1 ]
Hofmann, Dirk [2 ]
Montoli, Andrea [1 ]
机构：
[1] Univ Coimbra, Dept Math, CMUC, P-3001454 Coimbra, Portugal
[2] Univ Aveiro, Dept Matemat, CIDMA, P-3810193 Aveiro, Portugal
来源：
APPLIED CATEGORICAL STRUCTURES | 2014年 / 22卷 / 5-6期
关键词：
Relational algebra; Effective descent morphism; Galois theory; Covering; Connected component; EFFECTIVE DESCENT MORPHISMS; GALOIS THEORY; MAPS;
D O I：
10.1007/s10485-013-9349-0
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
In this paper we use Janelidze's approach to the classical theory of topological coverings via categorical Galois theory to study coverings in categories of relational algebras. Moreover, we present characterizations of effective descent morphisms in the categories of M-ordered sets and of multi-ordered sets.
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页码：767 / 788
页数：22
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