Title
Levels of Uniformity
Abstract
We introduce a hierarchy of degree structures between the Medvedev and Muchnik lattices which allow varying amounts of nonuniformity. We use these structures to introduce the notion of the uniformity of a Muchnik reduction, which expresses how uniform a reduction is. We study this notion for several well-known reductions from algorithmic randomness. Furthermore, since our new structures are Brouwer algebras, we study their propositional theories. Finally, we study if our new structures are elementarily equivalent to each other.
Year
DOI
Venue
2019
10.1215/00294527-2018-0024
NOTRE DAME JOURNAL OF FORMAL LOGIC
Keywords
Field
DocType
Medvedev degrees,Muchnik degrees,algorithmic randomness
Discrete mathematics,Algebra,Elementary equivalence,Lattice (order),Algorithmic randomness,Hierarchy,Mathematics
Journal
Volume
Issue
ISSN
60
1
0029-4527
Citations 
PageRank 
References 
0
0.34
6
Authors
1
Name
Order
Citations
PageRank
Rutger Kuyper163.72