On compact $T_1$-spaces
Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki, no. 3 (2013), pp. 20-27
Cet article a éte moissonné depuis la source Math-Net.Ru
We consider spaces, any subspaces of which are compact. We call such spaces hereditarily compact. The present work covers questions on the existence and methods of constructing hereditarily compact $T_1$-topologies. We prove the existence of $2^\tau$ pairwise incomparable hereditarily compact $T_1$-topologies on an infinite set $X$ of power $\tau$. The characteristics of hereditarily compact spaces are obtained. It is proved that the Tychonoff product of a finite number of hereditarily compact $T_1$-spaces is a hereditarily compact $T_1$-space, but the Tychonoff product of an infinite number of nonsingleton hereditarily compact $T_1$-spaces is not hereditarily compact.
Keywords:
compactness, minimal $T_1$-topology, Tychonoff product.
@article{VUU_2013_3_a1,
author = {M. E. Voronov},
title = {On compact $T_1$-spaces},
journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
pages = {20--27},
year = {2013},
number = {3},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/VUU_2013_3_a1/}
}
M. E. Voronov. On compact $T_1$-spaces. Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki, no. 3 (2013), pp. 20-27. http://geodesic.mathdoc.fr/item/VUU_2013_3_a1/
[1] de Groot Y., “An isomorphism principle in general topology”, Bull. Amer. Math. Soc., 73:3 (1967), 465–467 | DOI | MR | Zbl
[2] Arkhangel'skii A. V., “Maps and spaces”, Usp. Mat. Nauk, 21:4 (1966), 133–184 | MR | Zbl
[3] Arkhangel'skii A. V., Ponomarev V. I., Funda-mentals of general topology through problems and exercises, Nauka, Moscow, 1974, 424 pp. | MR
[4] Engelking R., General topology, Mir, Moscow, 1986, 752 pp. | MR
[5] Fedorchuk V. V., Filippov V. V., General topology. Basic design, Fizmatlit, Moscow, 2006, 336 pp.