Cover ( == Similarity) / Partition ( == Equivalence) / Partition Lattice
0. References
Prerequisite: Complemented Lattice
References
引子:Pre-ordering on Monoids
Overiew
1. macOS 自带的 Ruby
1. Relation (Mathmatics)
Part I - The Mechanics of Change
首先这俩工具对没有耐心的人真的非常不友好: