Finite spaces and the universal bundle of a group
Witbooi, Peter
Commentationes Mathematicae Universitatis Carolinae, Tome 38 (1997), p. 791-799 / Harvested from Czech Digital Mathematics Library

We find sufficient conditions for a cotriad of which the objects are locally trivial fibrations, in order that the push-out be a locally trivial fibration. As an application, the universal $G$-bundle of a finite group $G$, and the classifying space is modeled by locally finite spaces. In particular, if $G$ is finite, then the universal $G$-bundle is the limit of an ascending chain of finite spaces. The bundle projection is a covering projection.

Publié le : 1997-01-01
Classification:  54B15,  54B17,  55R35,  55R40,  55R65
@article{118973,
     author = {Peter Witbooi},
     title = {Finite spaces and the universal bundle of a group},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     volume = {38},
     year = {1997},
     pages = {791-799},
     zbl = {0938.55024},
     mrnumber = {1603722},
     language = {en},
     url = {http://dml.mathdoc.fr/item/118973}
}
Witbooi, Peter. Finite spaces and the universal bundle of a group. Commentationes Mathematicae Universitatis Carolinae, Tome 38 (1997) pp. 791-799. http://gdmltest.u-ga.fr/item/118973/

Alexandroff P. Diskrete Räume, Matematiceskii Sbornik (N.S.) 2 (1937), 501-518. (1937) | MR 0004764 | Zbl 0018.09105

Arhangel'Skii A.V.; Ponomarev V.I. Fundamentals of General Topology, Problems and Exercises, D. Reidel Publishing Company, Dordrecht, Holland, 1984. | MR 0785749

Hardie K.A.; Vermeulen J.J.C. Homotopy theory of finite and locally finite T$_0$ spaces, Expo. Math. 11 (1993), 331-341. (1993) | MR 1240364

Khalimsky E.D. Applications of ordered topological spaces in topology, Conference of Math. Departments of Povolsia, 1970.

Massey W.S. Algebraic Topology, an Introduction, Graduate Texts in Mathematics 70, Springer, 1977. | MR 0448331 | Zbl 0457.55001

Mccord M.C. Singular homology groups and homotopy groups of finite topological spaces, Duke Math. J. 33 (1966), 465-474. (1966) | MR 0196744 | Zbl 0142.21503

Milnor J.W. Construction of universal bundles I, II, Ann. of Math. 63 (1956), 272-284 and 430-436. (1956) | MR 0077122

Stong R.E. Finite topological spaces, Trans. Amer. Math. Soc. 123 (1966), 325-340. (1966) | MR 0195042 | Zbl 0151.29502

Steenrod N.E. The Topology of Fibre Bundles, Princeton University Press, Princeton, New Jersey, 1951. | MR 0039258 | Zbl 0942.55002

Witbooi P.J. Isomorphisms of fibrewise spaces, to appear in Festschrift for G.C.L. Brümmer on his sixtieth birthday, University of Cape Town, Rondebosch, South Africa. | MR 1722586 | Zbl 0988.54012