Volume 18, No 5, 2011, P. 80-97
N. G. Parvatov
About finding of maximal subclones in weak-central clone
The completeness problem in weak-central clone is considered. General conditions are formulated for finding the maximal subclones of such clone. Explicit description of maximal subclones with so-called weak essential functions is received in the case of weak-central clone defined by a hereditary set system.
Keywords: closed class, clone, predicate, preserving the predicate, Galois connection, completeness problem, weak-central predicate, central predicate, weak-central clone.
Parvatov Nikolai Georgievich 1
1. Tomsk State University,
36 Lenina ave., 634050 Tomsk, Russia