References
Karlin, S.: Total Positivity, Vol. 1. Stanford: Stanford University Press 1968
Shapiro, H.S.: Topics in Approximation Theory. Lecture Notes in Mathematics187. Berlin-Heidelberg-New York: Springer 1971
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The second and third author of this paper were supported in part by a U.S. Army Research Office grant.
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Borosh, I., Chui, C.K. & Smith, P.W. Best uniform approximation from a collection of subspaces. Math Z 156, 13–18 (1977). https://doi.org/10.1007/BF01215125
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DOI: https://doi.org/10.1007/BF01215125