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2016 | OriginalPaper | Buchkapitel

A Quest for Algorithmically Random Infinite Structures, II

verfasst von : Bakhadyr Khoussainov

Erschienen in: Logical Foundations of Computer Science

Verlag: Springer International Publishing

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Abstract

We present an axiomatic approach that introduces algorithmic randomness into various classes of structures. The central concept is the notion of a branching class. Through this technical yet simple notion we define measure, metric, and topology in many classes of graphs, trees, relational structures, and algebras. As a consequence we define algorithmically random structures. We prove the existence of algorithmically random structures with various computability-theoretic properties. We show that any nontrivial variety of algebras has an effective measure 0. We also prove a counter-intuitive result that there are algorithmically random yet computable structures. This establishes a connection between algorithmic randomness and computable model theory.

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Fußnoten
1
The next subsection provides many examples of classes with height function. For now, for the reader a good example of a class with a height function is the class of rooted finite binary trees.
 
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Metadaten
Titel
A Quest for Algorithmically Random Infinite Structures, II
verfasst von
Bakhadyr Khoussainov
Copyright-Jahr
2016
DOI
https://doi.org/10.1007/978-3-319-27683-0_12

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