A catastrophe which can occur for three control factors and two behavior axes. The elliptical umbilic is catastrophe of codimension 3 that
has the equation 
.
Elliptic Umbilic Catastrophe
See also
Catastrophe Theory, Hyperbolic Umbilic CatastropheExplore with Wolfram|Alpha
References
Sanns, W. Catastrophe Theory with Mathematica: A Geometric Approach. Germany: DAV, 2000.Referenced on Wolfram|Alpha
Elliptic Umbilic CatastropheCite this as:
Weisstein, Eric W. "Elliptic Umbilic Catastrophe." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/EllipticUmbilicCatastrophe.html