On the infinite powers of large zero-dimensional metrizable spaces
Keywords:
zero-dimensional, metrizable, infinite power, strongly homogeneous, h-homogeneous, clopen set, partition, $\pi$-baseAbstract
We show that $X^\lambda$ is strongly homogeneous whenever $X$ is a non-separable zero-dimensional metrizable space and $\lambda$ is an infinite cardinal. This partially answers a question of Terada, and improves a previous result of the author. Along the way, we show that every non-compact weight-homogeneous metrizable space with a $\pi$-base consisting of clopen sets can be partitioned into $\kappa$ many clopen sets, where $\kappa$ is the weight of $X$. This improves a result of van Engelen.
References
A. V. Arhangel'skii, J. van Mill. Topological homogeneity. Recent Progress in General Topology III. Atlantis Press, 2014. 1-68.
Z. Balogh, S. W. Davis, A. Dow, G. Gruenhage, P. J. Nyikos, M. E. Rudin, F. D. Tall, S. Watson. New classic problems. Topology Proc. 15 (1990), 201-220.
A. Dow, E. Pearl. Homogeneity in powers of zero-dimensional first-countable spaces. Proc. Amer. Math. Soc. 125 (1997), 2503-2510.
F. van Engelen. On the homogeneity of infinite products. Topology Proc. 17 (1992), 303-315.
R. Engelking. General topology. Revised and completed edition. Sigma Series in Pure Mathematics, vol. 6. Heldermann Verlag, Berlin, 1989.
B. Fitzpatrick Jr., H. X. Zhou. Some open problems in densely homogeneous spaces. Open problems in topology. North-Holland, Amsterdam, 1990. 251-259.
T. Jech. Set theory. The third millennium edition, revised and expanded. Springer Monographs in Mathematics. Springer-Verlag, Berlin, 2003.
O. H. Keller. Die Homoiomorphie der kompakten konvexen Mengen in Hilbertschen Raum. Math. Ann. 105 (1931), 748-758.
L. B. Lawrence. Homogeneity in powers of subspaces of the real line. Trans. Amer. Math. Soc. 350:8 (1998), 3055-3064.
A. Medini. Products and h-homogeneity. Topology Appl. 158:18 (2011), 25202527.
A. Medini. The topology of ultrafilters as subspaces of the Cantor set and other topics. Ph.D. Thesis. University of Wisconsin - Madison. ProQuest LLC, Ann Arbor, MI, 2013.
A. Medini, J. van Mill, L. Zdomskyy. Infinite powers and Cohen reals. Canad. Math. Bull. 61:4 (2018), 812-821.
S. V. Medvedev. On properties of $h$-homogeneous spaces with the Baire property. Topology Appl. 159:3 (2012), 679-694.
S. V. Medvedev. About closed subsets of spaces of first category. Topology Appl. 159:8 (2012), 2187-2192.
S. V. Medvedev. Homogeneity and h-homogeneity. Topology Appl. 160:18 (2013), 25232530.
T. Terada. Spaces whose all nonempty clopen subsets are homeomorphic. Yokohama Math. Jour. 40 (1993), 87-93.