Hurwitz's Freeness Property
arXiv:0809.0550
Abstract
The groupoid attached to the action of PSL(2,Z) on the irrational reals by linear fractional transformations is free.
LaTeX, 3 pages. Minor change
arXiv:0809.0550
The groupoid attached to the action of PSL(2,Z) on the irrational reals by linear fractional transformations is free.
LaTeX, 3 pages. Minor change