91616
If k \ leq n , the map f is already cellular on en , since in this case only cells of the n-skeleton of Y meets f ( en ) , so we may assume that k > n. It is then a technical , non-trivial result ( see Hatcher ) that the restriction of f to X ^ \ cup e ^ n can be homotoped relative to Xn-1 to a map missing a point p ∈ ek .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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