A constrained Nevanlinna-Pick interpolation problem
A constrained Nevanlinna-Pick interpolation problem
We obtain necessary and sufficient conditions for Nevanlinna-Pick interpolation on the unit disk with the additional restriction that all analytic interpolating functions satisfy f ′ (0) = 0.Alternatively, these results can be interpreted as interpolation results for H ∞ (V ), where V is the intersection of the bidisk with …