Uniform Approximation of Vector-Valued Functions with a Constraint

Geneva G. Belford
1972 Mathematics of Computation  
This paper deals with existence and characterization of best approximations to vector-valued functions. The approximations are themselves vector-valued functions with components taken from a linear space, but the constraint is imposed that certain of the approximation parameters should be identical for all components.
doi:10.2307/2005175 fatcat:uyywp6n7azgn3bxice3axb62m4