Extension of continuous functions in digital spaces with the Khalimsky topology
Extension of continuous functions in digital spaces with the Khalimsky topology
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DOI:
10.1016/j.topol.2004.12.004
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发表时间:
2005-08
影响因子:
0.6
通讯作者:
Erik Melin
中科院分区:
文献类型:
--
作者:
Erik Melin
The digital space Znequipped with Efim Khalimsky's topology is a connected space. We study continuous functions Zn⊃A→Z, from a subset of Khalimsky n-space to the Khalimsky line. We give necessary and sufficient condition for such a function to be extendable to a continuous function Zn→Z. We classify the subsets A of the digital plane such that every continuous function A→Z can be extended to a continuous function on the whole plane.