sets
set - see
Extra - Sets and mappings - Basic set theory
bounded - see
Functions - Theory - Real numbers - Topological notions
cardiality - see
Extra - Sets and mappings - Mappings
closed - see
Functions - Theory - Real numbers - Topological notions
countable - see
Extra - Sets and mappings - Mappings
dense - see
Functions - Theory - Real numbers - Topological notions
finite - see
Extra - Sets and mappings - Mappings
infimum - see
Functions - Theory - Real numbers - Topological notions
lower bound - see
Functions - Theory - Real numbers - Topological notions
maximum - see
Functions - Theory - Real numbers - Topological notions
minimum - see
Functions - Theory - Real numbers - Topological notions
open - see
Functions - Theory - Real numbers - Topological notions
supremum - see
Functions - Theory - Real numbers - Topological notions
uncountable - see
Extra - Sets and mappings - Mappings
upper bound - see
Functions - Theory - Real numbers - Topological notions
Venn diagrams - see
Extra - Sets and mappings - Basic set theory