Up: Principal Curvatures

Some other surfaces

The paraboloid

In this case, at p =(0,0,0), k1 = k2. Points such as p where k1 = k2 are called umbilical points.

The Monkey Saddle

In this case k1 = k2 = 0 at p=(0,0,0).

The Dog Saddle

In this case k1 = k2 = 0 at p=(0,0,0).

The Parabolic Cylinder


Up: Principal Curvatures
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