Implicit curves and surfaces

Zero-sum curves and surfaces

Implicitly defined curves (left graphic) and (right graphic) in the ,‐plane.

Implicitly defined surface (left graphic) and (right graphic) in ,,‐space. For the real part we have the degenerate case that all points with belong to this "surface".

Implicitly defined surfaces (empty left graphic) and (right graphic) in ,,‐space.