Definition:Complex (Group Theory)/Historical Note

Historical Note on Complex (Group Theory)

The concept of a complex in the context of group theory as a synonym for a subset of a group is old-fashioned and perhaps even idiosyncratic.

Beyond documenting the idea, $\mathsf{Pr} \infty \mathsf{fWiki}$ will not be exploring the concept, as a treatment using the concept of a subset is well-developed and mathematically mainstream.