On nonseparable Erdös spaces
DIJKSTRA, Jan J. ; VAN MILL, Jan ; VALKENBURG, Kirsten I. S.
J. Math. Soc. Japan, Tome 60 (2008) no. 1, p. 793-818 / Harvested from Project Euclid
In 2005, Dijkstra studied subspaces $\mathscr{E}$ of the Banach spaces $\ell^p$ that are constructed as `products' of countably many zero-dimensional subsets of $\bm{R}$ , as a generalization of Erdös space and complete Erdös space. He presented a criterion for deciding whether a space of the type $\mathscr{E}$ has the same peculiar features as Erdös space, which is one-dimensional yet totally disconnected and has a one-dimensional square. In this paper, we extend the construction to a nonseparable setting and consider spaces $\mathscr{E}_\mu$ corresponding to products of $\mu$ zero-dimensional subsets of $\bm{R}$ in nonseparable Banach spaces. We are able to generalize both Dijkstra's criterion and his classification of closed variants of $\mathscr{E}$ . We can further generalize the latter to complete spaces and we find that a one-dimensional complete space $\mathscr{E}_\mu$ is homeomorphic to a product of complete Erdös space with a countable product of discrete spaces. Among the applications, we find coincidence of the small and large inductive dimension for $\mathscr{E}_\mu$ .
Publié le : 2008-07-15
Classification:  complete Erdös space,  Lelek fan,  topological dimension,  almost zero-dimensional,  nonseparable Banach space,  54F45,  54F65
@article{1217884493,
     author = {DIJKSTRA, Jan J. and VAN MILL, Jan and VALKENBURG, Kirsten I. S.},
     title = {On nonseparable Erd\"os spaces},
     journal = {J. Math. Soc. Japan},
     volume = {60},
     number = {1},
     year = {2008},
     pages = { 793-818},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1217884493}
}
DIJKSTRA, Jan J.; VAN MILL, Jan; VALKENBURG, Kirsten I. S. On nonseparable Erdös spaces. J. Math. Soc. Japan, Tome 60 (2008) no. 1, pp.  793-818. http://gdmltest.u-ga.fr/item/1217884493/