They are the infinite limits of the discrete two-dimensional point groups C and D:

Random graphs have a diameter of two with probability approaching one, in the infinite limit ().

In the infinite limit these approach a duocylinder and look like a torus in their stereographic projections into 3-space.

These rules are modeled on the laws for infinite limits.

In the infinite limit, these groups become the one-dimensional line groups.

Finding limits of functions, including infinite limits and limits from one direction.

Note that with this topological definition, it is easy to define infinite limits at finite points, which have not been defined above in the metric sense.

However, if applied with infinite limits, it often gives improper prior distributions.

The sum can also be rearranged to diverge to or to fail to approach any limit, finite or infinite.

In the infinite limit regular skew polygons become skew apeirogons.