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Date: 25-6-2017
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Date: 23-5-2021
1482
Date: 4-8-2021
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Let and be CW-complexes and let (respectively ) denote the -skeleton of (respectively ). Then a continuous map is said to be cellular if it takes -skeletons to -skeletons for all , i.e, if
for all nonnegative integers .
The contents of the cellular approximation theorem is that, in a certain sense, all maps between CW-complexes can be taken to be cellular.
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