Geodesic
Cyclic Subgroup Separability of Certain HNN Extensions
Bulletin of the Malaysian Mathematical Society, Tome 22 (1999) no. 2 
Wong Peng Choon; Gan Hui Woan. Cyclic Subgroup Separability of Certain
                        HNN Extensions. Bulletin of the Malaysian Mathematical Society, Tome 22 (1999) no. 2. http://geodesic.mathdoc.fr/item/BMMS_1999_22_2_a6/
@article{BMMS_1999_22_2_a6,
     author = {Wong Peng Choon and Gan Hui Woan},
     title = {Cyclic {Subgroup} {Separability} of {Certain
}                        {HNN} {Extensions}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {1999},
     volume = {22},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/BMMS_1999_22_2_a6/}
}
TY  - JOUR
AU  - Wong Peng Choon
AU  - Gan Hui Woan
TI  - Cyclic Subgroup Separability of Certain
                        HNN Extensions
JO  - Bulletin of the Malaysian Mathematical Society
PY  - 1999
VL  - 22
IS  - 2
UR  - http://geodesic.mathdoc.fr/item/BMMS_1999_22_2_a6/
ID  - BMMS_1999_22_2_a6
ER  - 
%0 Journal Article
%A Wong Peng Choon
%A Gan Hui Woan
%T Cyclic Subgroup Separability of Certain
                        HNN Extensions
%J Bulletin of the Malaysian Mathematical Society
%D 1999
%V 22
%N 2
%U http://geodesic.mathdoc.fr/item/BMMS_1999_22_2_a6/
%F BMMS_1999_22_2_a6

Voir la notice de l'article provenant de la source BMMS

In this note, we shall show that certain HNN extensions of cyclic subgroup separable groups and certain HNN extensions of subgroup separable groups are cyclic subgroup separable. We also show that one-relator groups with non-trivial centre are cyclic subgroup separable.