boundedness of functions
bounded function - see
Functions - Theory - Real functions - Basic properties
and
Functions - Methods Survey - Basic properties - Boundedness
lower bound of a function - see
Functions - Theory - Real functions - Basic properties
unbounded function - see
Functions - Theory - Real functions - Basic properties
and
Functions - Methods Survey - Basic properties - Boundedness
upper bound of a function - see
Functions - Theory - Real functions - Basic properties