Uniqueness of the Seiberg-Witten effective Lagrangian Original Research Article

The low energy effective Lagrangian for N = 2 supersymmetric Yang-Mills theory, proposed by Seiberg and Witten is shown to be the unique solution, assuming only that supersymmetry is unbroken and that the number of strong-coupling singularities is finite. Duality is then a consequence rather than an input.