Quotient Spaces Determined by Algebras of Continuous Functions

Details Quotient Spaces Determined by Algebras of Continuous Functions Quotient Spaces Determined by Algebras of Continuous Functions

2008-11-20

arxiv.org/abs/0811.3280v1

Mathematics

General Topology

Scientific paper

we prove that if $X$ is a locally compact $\sigma$-compact space then on its quotient, $\gamma(X)$ say, determined by the algebra of all real valued bounded continuous functions on $X$, the quotient topology and the completely regular topology defined by this algebra are equal. It follows from this that if $X$ is second countable locally compact then $\gamma(X)$ is second countable locally compact Hausdorff if and only if it is first countable. The interest in these results originated in papers of R. J. Archbold, and S. Echterhoff and D. P. Williams where the primitive ideal space of a $C^*$-algebra was considered.

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