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In mathematics , Reeb sphere theorem , named after Georges Reeb , states that Morse foliation A singularity of a foliation F is of Morse type if in its small neighborhood all leaves of the foliation are levels of a Morse function , being the singularity a critical point of the function .
 Reeb, Georges Reeb
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Reeb, Georges Reeb