A model fo of this concept must provide:
CGAL::Comparison_result |
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Compares the y (second) variables of two Root_for_spheres_2_3. |
AlgebraicKernelForSpheres::CompareX
AlgebraicKernelForSpheres::CompareZ
AlgebraicKernelForSpheres::CompareXY
AlgebraicKernelForSpheres::CompareXYZ