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AN OPEN MAPPING THEOREM

Part of: Topological and differentiable algebraic systems Topological linear spaces and related structures

Published online by Cambridge University Press:  08 January 2016

SAAK S. GABRIYELYAN  and
SIDNEY A. MORRIS
SAAK S. GABRIYELYAN
Affiliation:
Department of Mathematics, Ben-Gurion University of the Negev, PO Box 653, Beer-Sheva, Israel email saak@math.bgu.ac.il
SIDNEY A. MORRIS*
Affiliation:
Faculty of Science and Technology, Federation University Australia, PO Box 663, Ballarat, Victoria 3353, Australia Department of Mathematics and Statistics, La Trobe University, Melbourne, Victoria 3086, Australia email morris.sidney@gmail.com
*
✉saak@math.bgu.ac.il
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Abstract

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It is proved that any surjective morphism $f:\mathbb{Z}^{{\it\kappa}}\rightarrow K$ onto a locally compact group $K$ is open for every cardinal ${\it\kappa}$. This answers a question posed by Hofmann and the second author.

Keywords

pro-Lie grouplocally compact abelian groupopen mapping theorem

MSC classification

Primary: 22A05: Structure of general topological groups
Secondary: 46A30: Open mapping and closed graph theorems; completeness (including $B$-, $B_r$-completeness)
Type
Research Article
Information
Bulletin of the Australian Mathematical Society , Volume 94 , Issue 1 , August 2016 , pp. 65 - 69
Copyright
© 2016 Australian Mathematical Publishing Association Inc. 

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