Combinatorics of Spreads and Parallelisms covers all known finite and infinite parallelisms as well as the planes comprising them. It also presents a complete analysis of general spreads and partitions of vector spaces that provide groups enabling the construction of subgeometry partitions of projective spaces.The book describes general partitions

Norman L. Johnson is a professor in the Department of Mathematics at the University of Iowa.

Partitions of Vector Spaces. Subgeometry Partitions. Subplane Covered Nets and Baer Groups. Flocks and Related Geometries. Derivable Geometries. Constructions of Parallelisms. Parallelism-Inducing Groups. Coset Switching. Transitivity. Appendices. Bibliography. Index.