922
There are also PROPs of matrices where the product is the Kronecker product , but in that class of PROPs the matrices must all be of the form ( sides are all powers of some common base ) ; these are the coordinate counterparts of appropriate symmetric monoidal categories of vector spaces under tensor product .
 person: Kronecker
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Kronecker