52875
Named after Leonhard Euler , it is a model example of a " q " - series , a modular form , and provides the prototypical example of a relation between combinatorics and complex analysis .
 Leonhard Euler
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Leonhard Euler