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If algebraic varieties like curves or surfaces are to be manipulated by computers, it is essential to be able to represent these geometric objects in an appropriate way. For some applications an implicit representation by algebraic equations is desirable, whereas for others an explicit or parametric representation is more suitable. Therefore, transformation algorithms from one representation to the other are of utmost importance. We investigate the transformation of an implicit representationdoi:10.1016/s0747-7171(08)80144-7 fatcat:lknq45rd4rbkjilgtb3ghabmc4