We derive the stability inequality C i cibi for the B-splines bi from the formula for knot insertion. The key observation is that knot removal increases the norm of the B-spline ...
This paper presents a method for estimating curvature values of a surface, which is given only approximatively, e.g., by measured data. The presented method requires estimates of ...
Morin and Goldman [Computer Aided Geometric Design 17 (2000) 813] have recently presented a remarkable new framework, based on employing Poisson series, for describing analytic fu...