Which topological spaces have a weak reflection in compact spaces?
Kovár, Martin Maria
Commentationes Mathematicae Universitatis Carolinae, Tome 36 (1995), p. 529-536 / Harvested from Czech Digital Mathematics Library

The problem, whether every topological space has a weak compact reflection, was answered by M. Hu\v sek in the negative. Assuming normality, M. Hu\v sek fully characterized the spaces having a weak reflection in compact spaces as the spaces with the finite Wallman remainder. In this paper we prove that the assumption of normality may be omitted. On the other hand, we show that some covering properties kill the weak reflectivity of a noncompact topological space in compact spaces.

Publié le : 1995-01-01
Classification:  54C20,  54D20,  54D35
@article{118782,
     author = {Martin Maria Kov\'ar},
     title = {Which topological spaces have a weak reflection in compact spaces?},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     volume = {36},
     year = {1995},
     pages = {529-536},
     zbl = {0860.54024},
     mrnumber = {1364494},
     language = {en},
     url = {http://dml.mathdoc.fr/item/118782}
}
Kovár, Martin Maria. Which topological spaces have a weak reflection in compact spaces?. Commentationes Mathematicae Universitatis Carolinae, Tome 36 (1995) pp. 529-536. http://gdmltest.u-ga.fr/item/118782/

Adámek J.; Rosický J. On injectivity in locally presentable categories, preprint, 1991 {published}: Trans. Amer. Math. Soc. 336,2 (1993), 785-804. (1993) | MR 1085935

Burke D.K. Covering properties, Handbook of Set-theoretic Topology K. Kunen and J.E. Vaughan North-Holland Amsterdam (1984), 347-421. (1984) | MR 0776628 | Zbl 0569.54022

Császár A. General Topology, Akademiai Kiadó Budapest (1978). (1978)

Hušek M. Čech-Stone-like compactifications for general topological spaces, Comment. Math. Univ. Carolinae 33,1 (1992), 159-163. (1992) | MR 1173757

Janković D.S. $\theta$-regular spaces, preprint {published}: Internat. J. Math. Sci. 8 (1985), no.3, 615-619. (1985) | MR 0809083

Kovár M.M. On $\theta$-regular spaces, Internat. J. Math. Sci. 17 (1994), no. 4, 687-692. (1994) | MR 1298791

Kovár M.M. Product spaces, paracompactness and Boyte's covering property, preprint, 1994.