Convexities of partial monounary algebras

被引：2
|
作者：
Jakubikova-Studenovska, D. [1 ]
机构：
[1] Safarik Univ, Inst Math, Fac Sci, SK-04154 Kosice, Slovakia
来源：
ALGEBRA UNIVERSALIS | 2009年 / 60卷 / 02期
关键词：
partial monounary algebra; convex relative subalgebra; convexity;
D O I：
10.1007/s00012-009-2087-3
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
In the present paper we prove that the collection K of all convexities of partial monounary algebras is finite; namely, it has exactly 23 elements. Further, we show that for each element kappa is an element of K there exists a subset kappa(0) of kappa such that kappa is generated by kappa(0) and card kappa(0) <= 2.
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页码：125 / 143
页数：19
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