ThmDex – An index of mathematical definitions, results, and conjectures.
Set of symbols
Alphabet
Deduction system
Theory
Zermelo-Fraenkel set theory
Set
Subset
Power set
Hyperpower set sequence
Hyperpower set
Hypersubset
Subset algebra
Topology
Bottom topology
Definition D1162
Bottom topological space
Formulation 0
An D548: Ordered pair $T = (X, \mathcal{T})$ is a bottom topological space if and only if
(1) $X$ is a D11: Set
(2) $\mathcal{T}$ is a D1163: Bottom topology on $X$
Children
Empty topological space