Geodesic
On the structure of families of immune, hyperimmune and hyperhyperimmune sets
Sbornik. Mathematics, Tome 52 (1985) no. 2, pp. 301-313

Voir la notice de l'article provenant de la source Math-Net.Ru

The author studies the algebraic structures formed by $m$-degrees containing immune, hyperimmune and hyperhyperimmune sets. He shows that the family of all immune sets relative to $m$-reducibility forms a $c$-universal upper semilattice, the families of all hyperimmune and hyperhyperimmune sets do not form subsemilattices of the semilattice of all $m$-degrees, etc. Bibliography: 9 titles. 
@article{SM_1985_52_2_a1,
     author = {A. A. Mal'tsev},
     title = {On the structure of families of immune, hyperimmune and hyperhyperimmune sets},
     journal = {Sbornik. Mathematics},
     pages = {301--313},
     publisher = {mathdoc},
     volume = {52},
     number = {2},
     year = {1985},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1985_52_2_a1/}
}
TY  - JOUR
AU  - A. A. Mal'tsev
TI  - On the structure of families of immune, hyperimmune and hyperhyperimmune sets
JO  - Sbornik. Mathematics
PY  - 1985
SP  - 301
EP  - 313
VL  - 52
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1985_52_2_a1/
LA  - en
ID  - SM_1985_52_2_a1
ER  - 
%0 Journal Article
%A A. A. Mal'tsev
%T On the structure of families of immune, hyperimmune and hyperhyperimmune sets
%J Sbornik. Mathematics
%D 1985
%P 301-313
%V 52
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1985_52_2_a1/
%G en
%F SM_1985_52_2_a1
A. A. Mal'tsev. On the structure of families of immune, hyperimmune and hyperhyperimmune sets. Sbornik. Mathematics, Tome 52 (1985) no. 2, pp. 301-313. http://geodesic.mathdoc.fr/item/SM_1985_52_2_a1/