The distribution of properly Sigma(0)(2) e-degrees

Authors
Bereznyuk, S Coles, R Sorbi, A
Citation
S. Bereznyuk et al., The distribution of properly Sigma(0)(2) e-degrees, J SYMB LOG, 65(1), 2000, pp. 19-32
Citations number
9
Categorie Soggetti
Mathematics
Journal title
JOURNAL OF SYMBOLIC LOGIC
ISSN journal
00224812 → ACNP
Volume
65
Issue
1
Year of publication
2000
Pages
19 - 32
Database
ISI
SICI code
0022-4812(200003)65:1<19:TDOPSE>2.0.ZU;2-Y
Abstract
We show that for every enumeration degree a < 0(e)': there exists an e-degr ee c such that a less than or equal to c < 0(e)' and all degrees b with c l ess than or equal to b < 0(e)' are properly Sigma(2)(0).