66743
Since Cauchy sequences can also be defined in general topological groups , an alternative to relying on a metric structure for defining completeness and constructing the completion of a space is to use a group structure .
 Cauchy
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Cauchy