A new cardinal function on topological spaces

Dewi Kartika Sari

Singapore

Nanyang Technological University ; Universitas GadjahMada

Mathematics and Mathematics Education, National Institute of Education

Dongsheng Zhao

Singapore

Nanyang Technological University

Mathematics and Mathematics Education, National Institute of Education

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Accepted: 2016-10-18

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Published: 2017-04-03

DOI: https://doi.org/10.4995/agt.2017.5869
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Keywords:

Neighbourhood assignments, Gauge compact space, gauge compact index, M-uniformly continuous mapping

Supporting agencies:

Ho Weng Kin

MME

NIE-NTU

Lee Peng Yee

LPDP

Ministry of Finance of Republic Indonesia

Abstract:

Using neighbourhood assignments, we introduce and study a new cardinal function, namely GCI(X), for every topological space X. We shall mainly investigate the spaces X with finite GCI(X). Some properties of this cardinal in connection with special types of mappings are also proved.

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References:

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