Examples of weak amalgamation classes

被引：3

作者：

Krawczyk, Adam ^{[1
]}

Kruckman, Alex ^{[2
]}

Kubis, Wieslaw ^{[3
]}

Panagiotopoulos, Aristotelis ^{[4
]}

机构：

[1] Univ Warsaw, Inst Math, Banacha 2, PL-02097 Warsaw, Poland

[2] Wesleyan Univ, Dept Math & Comp Sci, Sci Tower 655,265 Church St, Middletown, CT 06459 USA

[3] Czech Acad Sci, Inst Math, Zitna 25, Prague 11567 1, Czech Republic

[4] Carnegie Mellon Univ, Dept Math Sci, Pittsburgh, PA 15213 USA

来源：

MATHEMATICAL LOGIC QUARTERLY | 2022年 / 68卷 / 02期

关键词：

GENERIC AUTOMORPHISMS;

D O I：

10.1002/malq.202100037

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

We present several examples of hereditary classes of finite structures satisfying the joint embedding property and the weak amalgamation property, but failing the cofinal amalgamation property. These include a continuum-sized family of classes of finite undirected graphs, as well as an example due to Pouzet with countably categorical generic limit. (c) 2022 Wiley-VCH GmbH

引用

页码：178 / 188

页数：11

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