Countable Ideals in a Semi-Lattice of the De Enumeration Degrees

<p>In the article we have proved that any countable ideal in the semi-lattice of the De is the intersection of two principal ideals generated by quasi-minimal covers for this ideal.</p>

Bibliographic Details
Main Author: V. V. Tikhov
Format: Article
Language:English
Published: Yaroslavl State University 2012-01-01
Series:Modelirovanie i Analiz Informacionnyh Sistem
Subjects:
Online Access:http://mais-journal.ru/jour/article/view/41