Mutual algebraicity and cellularity
Mutual algebraicity and cellularity
复制标题
相互代数性和细胞性
DOI:
10.1007/s00153-021-00804-4
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发表时间:
2022
影响因子:
0.3
通讯作者:
Laskowski, Michael C.
中科院分区:
文献类型:
--
作者:
Braunfeld, Samuel;Laskowski, Michael C.
We prove two results intended to streamline proofs about cellularity that pass through mutual algebraicity. First, we show that a countable structureMis cellular if and only ifMis-categorical and mutually algebraic. Second, if a countable structureMin a finite relational language is mutually algebraic non-cellular, we show it admits an elementary extension adding infinitely many infinite MA-connected components. Towards these results, we introduce MA-presentations of a mutually algebraic structure, in which every atomic formula is mutually algebraic. This allows for an improved quantifier elimination and a decomposition of the structure into independent pieces. We also show this decomposition is largely independent of the MA-presentation chosen.
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DOI:
10.2140/mt.2022.1.15
发表时间:
2022
期刊:
Model Theory
影响因子:
--
作者:
Braunfeld, Samuel;Laskowski, Michael C.
通讯作者:
Laskowski, Michael C.
DOI:
--
发表时间:
1974
期刊:
影响因子:
--
作者:
A. Lachlan
通讯作者:
A. Lachlan
DOI:
--
发表时间:
1987
期刊:
Journal of Symbolic Logic (JSL)
影响因子:
--
作者:
A. Lachlan
通讯作者:
A. Lachlan
影响因子:
0.3
作者:
M. Laskowski
通讯作者:
M. Laskowski
影响因子:
0.7
作者:
Laskowski, Michael C.;Terry, Caroline A.
通讯作者:
Terry, Caroline A.