- Published 2003 in Journal of Graph Theory

We give a detailed algebraic characterization of when a graph G can be imbedded in the projective plane. The characterization is in terms of the existence of a dual graph G on the same edge set as G which satisfies algebraic conditions inspired by homology groups and intersection products in homology groups.

@article{Abrams2003AnAC,
title={An algebraic characterization of projective-planar graphs},
author={Lowell Abrams and Daniel C. Slilaty},
journal={Journal of Graph Theory},
year={2003},
volume={42},
pages={320-331}
}