An equation for the quantum average of the gauge invariant Wilson loop in n
on-commutative Yang-Mills theory with gauge group U(N) is obtained. In the
't Hooft limit, the equation reduces to the loop equation of ordinary Yang-
Mills theory. At finite N, the equation involves the quantum averages of th
e additional gauge invariant observables of the non-commutative theory asso
ciated with open contours in space-time. We also derive equations for corre
lators of several gauge invariant (open or closed) Wilson lines. Finally, w
e discuss a perturbative check of our results. (C) 2001 Elsevier Science B.
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