Title
Genericity and Non-bounding in the Enumeration degrees
Abstract
The structure of the semi lattice of enumeration degrees has been investigated from many aspects. One aspect is the bounding and non-bounding properties of generic degrees. Copestake proved that every 2-generic enumeration degree bounds a minimal pair and conjectured that there exists a 1-generic degree that does not bound a minimal pair. In this paper we verify this longstanding conjecture by constructing such a degree using an infinite injury priority argument.
Year
DOI
Venue
2007
10.1093/logcom/exm042
J. Log. Comput.
Keywords
Field
DocType
non-bounding property,longstanding conjecture,2-generic enumeration degree,enumeration degree,semi lattice,infinite injury priority argument,generic degree,minimal pair,1-generic degree
Discrete mathematics,Combinatorics,Minimal pair,Existential quantification,Lattice (order),Enumeration,Algebraic enumeration,Conjecture,Mathematics,Bounding overwatch
Journal
Volume
Issue
ISSN
17
6
0955-792X
Citations 
PageRank 
References 
0
0.34
1
Authors
1
Name
Order
Citations
PageRank
Mariya Ivanova Soskova12110.54