## A theorem on graph embedding with a relation to hyperbolic volume

- Alexander Stoimenow
- Combinatorica
- 2016

@article{Comerford1994ProductsOC, title={Products of Commutators and Products of Squares in a Free Group}, author={Leo P. Comerford and Charles C. Edmunds}, journal={IJAC}, year={1994}, volume={4}, pages={469-480} }

- Published 1994 in IJAC
DOI:10.1142/S0218196794000105

A classification of the ways in which an element of a free group can be expressed as a product of commutators or as a product of squares is given. This is then applied to some particular classes of elements. Finally, a question about expressing a commutator as a product of squares is addressed.