Reconstructing the topology of clones

Reconstructing the topology of clones
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重建克隆的拓扑

DOI:
10.1090/tran/6937
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发表时间:
2017
期刊:
ArXiv
影响因子:
--
通讯作者:
András Pongrácz
András Pongrácz
中科院分区:
--
文献类型:
--
作者:
Manuel Bodirsky;Michael Pinsker;András Pongrácz

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函数克隆是固定域上的函数集合,它们在组合下是封闭的,并且包含投影。它们带有一个自然的代数结构,由它们所持有的组合定律提供,以及一个自然的拓扑结构,由逐点收敛的拓扑提供,在这种拓扑结构下,函数的组合变得连续。最近的结果表明,拓扑自我的功能克隆的重要性,即使是原来的代数问题的启发,我们研究以下类型的问题:在哪些情况下,一个功能克隆的代数结构决定其拓扑结构?我们特别注意的功能克隆包含一个寡纯置换群,并讨论这种情况下的应用模型论和理论计算机科学。引用
Function clones are sets of functions on a fixed domain that are closed under composition and contain the projections. They carry a natural algebraic structure, provided by the laws of composition which hold in them, as well as a natural topological structure, provided by the topology of pointwise convergence, under which composition of functions becomes continuous. Inspired by recent results indicating the importance of the topological ego of function clones even for originally algebraic problems, we study questions of the following type: In which situations does the algebraic structure of a function clone determine its topological structure? We pay particular attention to function clones which contain an oligomorphic permutation group, and discuss applications of this situation in model theory and theoretical computer science. References
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