Title
Semiautomatic Structures.
Abstract
Semiautomatic structures generalise automatic structures in the sense that for some of the relations and functions in the structure one only requires the derived relations and functions are automatic when all but one input are filled with constants. One can also permit that this applies to equality in the structure so that only the sets of representatives equal to a given element of the structure are regular while equality itself is not an automatic relation on the domain of representatives. It is shown that one can find semiautomatic representations for the field of rationals and also for finite algebraic field extensions of it. Furthermore, one can show that infinite algebraic extensions of finite fields have semiautomatic representations in which the addition and equality are both automatic. Further prominent examples of semiautomatic structures are term algebras, any relational structure over a countable domain with a countable signature and any permutation algebra with a countable domain. Furthermore, examples of structures which fail to be semiautomatic are provided.
Year
Venue
Keywords
2017
Theory Comput. Syst.
Automatic structures,Automata theory,Basic algebraic structures,Groups,Rings,Semiautomatic structures
DocType
Volume
Issue
Journal
61
4
Citations 
PageRank 
References 
0
0.34
0
Authors
5
Name
Order
Citations
PageRank
Sanjay Jain11647177.87
Bakhadyr Khoussainov260472.96
Frank Stephan332934.02
Dan Teng401.01
Siyuan Zou500.68