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The Kerr solution is generated from the Schwarzschild solution by a simplecombination of real global coordinate transformations and of invariancetransformations acting on the space of stationary solutions of theEinstein-Maxwell equations. The same transformation can be used to generate aspinning field configuration from any static axisymmetric configuration. Weillustrate this by generating from the continuous family of Voorhees--Zipoyvacuum solutions a family of solutions endowed with mass, angular momentum,dipole magnetic moment and quadrupole electric moment.Comment: 8 pages, Late

From Schwarzschild to Kerr: Generating spinning Einstein-Maxwell fields from static fields