Abstract and Applied Analysis
- Abstr. Appl. Anal.
- Volume 2005, Number 3 (2005), 207-219.
Local inverses of Borel homomorphisms and analytic P-ideals
We present a theorem on the existence of local continuous homomorphic inverses of surjective Borel homomorphisms with countable kernels from Borel groups onto Polish groups. We also associate in a canonical way subgroups of with certain analytic P-ideals of subsets of . These groups, with appropriate topologies, provide examples of Polish, nonlocally compact, totally disconnected groups for which global continuous homomorphic inverses exist in the situation described above. The method of producing these groups generalizes constructions of Stevens and Hjorth and, just as those constructions, yields examples of Polish groups which are totally disconnected and yet are generated by each neighborhood of the identity.
Abstr. Appl. Anal., Volume 2005, Number 3 (2005), 207-219.
First available in Project Euclid: 25 July 2005
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Solecki, Sławomir. Local inverses of Borel homomorphisms and analytic P-ideals. Abstr. Appl. Anal. 2005 (2005), no. 3, 207--219. doi:10.1155/AAA.2005.207. https://projecteuclid.org/euclid.aaa/1122298424