rule of exponentsrule of false positionrule of inferencerule of multiplicationrule of multiplication of singsrule of signrule of signsrule of threerule of two errorsruledruled surfaceruled surfacesrulerruler functionrules of multiplication of signsrulingruling of the cylinderrulings of the conerunrun forrun fromrun intorun outrun overrun throughrun timerun to run controlrunge kutta methodrunge theoremrunnerrunning fitrunning timerupture strengthrussell definition of finitenessrussell definition of fitenessrussell paradox