EntityQ630057· pop 5· linked from 8 articlesChan–Paton factorSign in to saveMultivalued index associated with the endpoints of an open string.ConnectionsquarkEntitydigital object identifierEntityspacetimeEntitytheoretical physicsEntitystring theoryEntityantiparticleEntitytensorEntityisospinEntitystringEntityD-braneEntityhistory of string theoryEntityFlux tubeEntitygauge groupEntityCategoriesString theory