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Communicated by L. Collatz
The work of E. W. Cheney was supported by the United States Air Force Office of Scientific Research and by the Office of Naval Research.
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Cheney, E.W., Loeb, H.L. On the continuity of rational approximation operators. Arch. Rational Mech. Anal. 21, 391–401 (1966). https://doi.org/10.1007/BF00264465
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DOI: https://doi.org/10.1007/BF00264465