The exact condition of the B-spline basis may be hard to determine

@inproceedings{Boor1988TheEC,
  title={The exact condition of the B-spline basis may be hard to determine},
  author={Carl de Boor},
  year={1988}
}
The author's conjecture concerning the knot sequence whose associated B-spline sequence has maximum max-norm condition number is disproved. Related condition numbers are explored and the corresponding conjecture concerning the 'worst' knot sequence for them is further supported by numerical results. AMS (MOS) Subject Classifications: primary 41A15, 65F35; secondary 65D07 

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