(Continued from Epiphany 2012)

Yesterday's link to the post Special Topics suggests
a review of the garden of forking paths.

An example of such paths, given in the Special Topics
post, came from a paper describing the modular group:

Modular group tree

Here is another view of the modular group's
forking paths:

"Tree for modular group" from the
Algebra page of the University of Glasgow