P. Brandi, R. Ceppitelli, L'. Hol\'a
Kuratowski convergence on compacta and Hausdorff metric convergence on compacta

Comment.Math.Univ.Carolinae 40,2 (1999) 309-318.

Abstract:This paper completes and improves results of [10]. Let $(X,d_{_X})$, $(Y,d_{_Y})$ be two metric spaces and $G$ be the space of all $Y$-valued continuous functions whose domain is a closed subset of $X$. If $X$ is a locally compact metric space, then the Kuratowski convergence $\tau _{_K}$ and the Kuratowski convergence on compacta $\tau _{_K}^c$ coincide on $G$. Thus if $X$ and $Y$ are boundedly compact metric spaces we have the equivalence of the convergence in the Attouch-Wets topology $\tau _{_{AW}}$ (generated by the box metric of $d_{_X}$ and $d_{_Y}$) and $\tau _{_K}^c$ convergence on $G$, which improves the main result of [10]. In the second part of paper we extend the definition of Hausdorff metric convergence on compacta for general metric spaces $X$ and $Y$ and we show that if $X$ is locally compact metric space, then also $\tau $-convergence and Hausdorff metric convergence on compacta coincide in $G$.

Keywords: Kuratowski convergence, Attouch-Wets convergence, $\tau $-convergence, Kuratowski convergence on compacta and Hausdorff metric convergence on compacta
AMS Subject Classification: 54B20, 54C35

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