This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Antimatroid.svg Three views of an antimatroid an inclusion ordering on its family of feasible sets formal language and the Hasse diagram of the corresponding path poset en David Eppstein en David Eppstein original upload log page en Antimatroid svg David Eppstein bytes no broken kerning David Eppstein bytes no views