Abstract: | Open Wilson lines are known to be the observables of non-commutative gauge theory with Moyal-Weyl *-product. We generalize these objects to more general *-products. As an application we derive a formula for the inverse Seiberg-Witten map for *-products with invertible Poisson structures.Received: 13 February 2004, Revised: 1 March 2004, Published online: 8 April 2004 |