Subset
set whose elements are all contained in another set
event
non-measurable set
configuration space
reduced residue system
subsequence
fundamental domain
intersection
nowhere dense set
region of interest
sigma-algebra
hyperbolic triangle
unit disk
complement
neighborhood
upper set
separated sets
derived set
Gaussian prime
constructible set
projective frame
plane figure
subgroup
cone
sample
chain
kernel
homogeneous subset
edge cover
proper subset
irreducible component
region
generating set of a group
coset
system of parameters
0†
0#
basis
recursive set
circle of a sphere