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Zero-Avoiding Transducers, Length Separable Relations, and the Rational Asymmetric Partition Problem
International Journal of Foundations of Computer Science ( IF 0.8 ) Pub Date : 2021-02-06 , DOI: 10.1142/s0129054121410033 Stavros Konstantinidis 1 , Mitja Mastnak 1 , Juraj Šebej 2
International Journal of Foundations of Computer Science ( IF 0.8 ) Pub Date : 2021-02-06 , DOI: 10.1142/s0129054121410033 Stavros Konstantinidis 1 , Mitja Mastnak 1 , Juraj Šebej 2
Affiliation
We consider the problem of partitioning effectively a given irreflexive (and possibly symmetric) rational relation R into two asymmetric rational relations. This problem is motivated by a recent method of embedding an R -independent language into one that is maximal R -independent, where the method requires to use an asymmetric partition of R . We solve the problem when R is length-separable, which means that the following two subsets of R are rational: the subset of word pairs ( u , v ) where | u | ≤ | v | ; and the subset of word pairs ( u , v ) where | u | ≥ | v | . This property is satisfied by all recognizable, all left synchronous, and all right synchronous relations. We leave it as an open problem when R is not length-separable. We also define zero-avoiding transducers for length-separable relations, which makes our partitioning solution constructive.
中文翻译:
零避让传感器、长度可分关系和有理非对称分区问题
我们考虑有效划分给定的非自反(并且可能是对称的)有理关系的问题R 成两个不对称的有理关系。这个问题是由最近一种嵌入R - 独立语言变成一种最大的语言R -独立的,该方法需要使用非对称分区R . 我们解决问题的时候R 是长度可分的,这意味着以下两个子集R 是有理的:词对的子集( 你 , v ) 在哪里| 你 | ≤ | v | ; 和词对的子集( 你 , v ) 在哪里| 你 | ≥ | v | . 所有可识别、所有左同步和所有右同步关系都满足此属性。我们把它作为一个悬而未决的问题R 不是长度可分的。我们还为长度可分离的关系定义了零回避传感器,这使得我们的分区解决方案具有建设性。
更新日期:2021-02-06
中文翻译:
零避让传感器、长度可分关系和有理非对称分区问题
我们考虑有效划分给定的非自反(并且可能是对称的)有理关系的问题