Quotients of Strongly Realcompact Groups

L. Morales; M. Tkachenko

Topological Algebra and its Applications (2016)

  • Volume: 4, Issue: 1, page 9-17
  • ISSN: 2299-3231

Abstract

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A topological group is strongly realcompact if it is topologically isomorphic to a closed subgroup of a product of separable metrizable groups. We show that if H is an invariant Čech-complete subgroup of an ω-narrow topological group G, then G is strongly realcompact if and only if G/H is strongly realcompact. Our proof of this result is based on a thorough study of the interaction between the P-modification of topological groups and the operation of taking quotient groups.

How to cite

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L. Morales, and M. Tkachenko. "Quotients of Strongly Realcompact Groups." Topological Algebra and its Applications 4.1 (2016): 9-17. <http://eudml.org/doc/285677>.

@article{L2016,
abstract = {A topological group is strongly realcompact if it is topologically isomorphic to a closed subgroup of a product of separable metrizable groups. We show that if H is an invariant Čech-complete subgroup of an ω-narrow topological group G, then G is strongly realcompact if and only if G/H is strongly realcompact. Our proof of this result is based on a thorough study of the interaction between the P-modification of topological groups and the operation of taking quotient groups.},
author = {L. Morales, M. Tkachenko},
journal = {Topological Algebra and its Applications},
keywords = {Extension of groups; Strongly realcompact; Strongly Dieudonné complete; P-modification; Pgroup; Quotient group; extension of groups; strongly realcompact; strongly Dieudonné complete; P-group; quotient group},
language = {eng},
number = {1},
pages = {9-17},
title = {Quotients of Strongly Realcompact Groups},
url = {http://eudml.org/doc/285677},
volume = {4},
year = {2016},
}

TY - JOUR
AU - L. Morales
AU - M. Tkachenko
TI - Quotients of Strongly Realcompact Groups
JO - Topological Algebra and its Applications
PY - 2016
VL - 4
IS - 1
SP - 9
EP - 17
AB - A topological group is strongly realcompact if it is topologically isomorphic to a closed subgroup of a product of separable metrizable groups. We show that if H is an invariant Čech-complete subgroup of an ω-narrow topological group G, then G is strongly realcompact if and only if G/H is strongly realcompact. Our proof of this result is based on a thorough study of the interaction between the P-modification of topological groups and the operation of taking quotient groups.
LA - eng
KW - Extension of groups; Strongly realcompact; Strongly Dieudonné complete; P-modification; Pgroup; Quotient group; extension of groups; strongly realcompact; strongly Dieudonné complete; P-group; quotient group
UR - http://eudml.org/doc/285677
ER -

References

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  1. [1] A.V. Arhangel’skii, M. G. Tkachenko, Topological groups and related structures, Atlantis Studies in Mathematics, I. Atlantis Press, Paris–Amsterdam; World Scientific Publishing Co. Pte. Ltd., Hackensack, New Jork (2008). xiv+781 pp. ISBN: 978-90- 78677-06-2.  
  2. [2] R. Engelking, General Topology, Heldlermann Verlag, Berlin (1989).  
  3. [3] D. L. Grant, Topological groups which satisfy an open mapping theorem, Pacific J. Math. 68 (1977), 411–423.  Zbl0375.22002
  4. [4] C. Hernandez, M.G. Tkachenko, A note on !-modification and completeness concepts, Bol. Soc.Mat. Mexicana (3) 8 (2002), 93–96.  Zbl1002.54022
  5. [5] G. Lukász, Compact-like topological groups, Research and Exposition in Mathematics, 31. Heldermann Verlag, Lemgo, 2009.  
  6. [6] V. G. Pestov, Embeddings and condensations of topological groups, Math. Notes 31, 3–4, 228–230. Russian original in: Mat. Zametki 31 (1982), 442–446. [Crossref] 
  7. [7] W. Roelcke, S. Dierolf, Uniform Structures on Topological Groups and Their Quotients, McGraw-Hill (1981).  Zbl0489.22001
  8. [8] M. G. Tkachenko, C. Hernández-García, and M.A. López Ramírez, Strong realcompactness and strong Dieudonné completeness in topological groups, Topol. Appl. 159 (2012), 1948–1955. [WoS] Zbl1244.54076
  9. [9] M. Ursul, Embeddings of locally precompact groups in locally pseudocompact ones, Izv. Akad. Nauk Moldav. SSR Ser. Fiz.-Tekh. Mat. Nauk 3 (1989), 54–56 (in Russian).  Zbl0699.22007

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