partition of a set
mathematical ways to group elements of a set
arrangement of lines
partition of the plane formed by a collection of lines
dichotomy
splitting of a whole into exactly two non-overlapping parts
Venn diagram
diagram that shows all possible logical relations between a collection of sets
Training, validation, and test sets
three datasets used in machine learning
foliation
equivalence relation on a manifold, the equivalence classes being injectively immersed connected submanifolds, modeled on decomposition of ℝⁿ into 𝑥+ℝᵖ
Dedekind cut
method of construction of the real numbers
perfect partition
a partition of n, whose elements uniquely generate 1,2,...n
cut
in graph theory, partition of the vertices in two sets
trichotomy
division into three categories