Geodesic
Subnormal spaces and a Dowker-type problem
Fundamentalʹnaâ i prikladnaâ matematika, Tome 4 (1998) no. 1, pp. 181-186.

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

In the present paper the class of subnormal spaces — the spaces in which any two closed disjoint sets can be separated by disjoint $G_\delta$ sets — is considered. It is proved that the product of a space $X$ by the closed real interval (or by any $\sigma$-compact Hausdorff space with countable network) is subnormal provided that $X$ is subnormal and countably metacompact. An example of a weakly normal space which is not subnormal is presented. 
@article{FPM_1998_4_1_a14,
     author = {A. N. Yakivchik},
     title = {Subnormal spaces and a {Dowker-type} problem},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {181--186},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_1998_4_1_a14/}
}
TY  - JOUR
AU  - A. N. Yakivchik
TI  - Subnormal spaces and a Dowker-type problem
JO  - Fundamentalʹnaâ i prikladnaâ matematika
PY  - 1998
SP  - 181
EP  - 186
VL  - 4
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FPM_1998_4_1_a14/
LA  - ru
ID  - FPM_1998_4_1_a14
ER  - 
%0 Journal Article
%A A. N. Yakivchik
%T Subnormal spaces and a Dowker-type problem
%J Fundamentalʹnaâ i prikladnaâ matematika
%D 1998
%P 181-186
%V 4
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FPM_1998_4_1_a14/
%G ru
%F FPM_1998_4_1_a14
A. N. Yakivchik. Subnormal spaces and a Dowker-type problem. Fundamentalʹnaâ i prikladnaâ matematika, Tome 4 (1998) no. 1, pp. 181-186. http://geodesic.mathdoc.fr/item/FPM_1998_4_1_a14/