393459
one-form ) Abelian electrodynamics We have a one-form A , a gauge symmetry where α is any arbitrary fixed 0-form and d is the exterior derivative , and a gauge-invariant vector current J with density 1 satisfying the continuity equation where * is the Hodge dual .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
 None