On the characterization of complex rational approximations
Wulbert, Daniel E.
Illinois J. Math., Tome 24 (1980) no. 4, p. 140-155 / Harvested from Project Euclid
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An example is constructed showing that best uniform approximation (local or global) from $R_{n}^{m}(\mathbf{c})$ can not be characterized by linearization techniques or by alternation properties of the error function. A class of local best approximations are characterized, and used to demonstrate approximation properties of $R_{n}^{m}(\mathbf{c})$.
Publié le : 1980-03-15
Classification:  30E10,  41A20 
@article{1256047801,
     author = {Wulbert, Daniel E.},
     title = {On the characterization of complex rational approximations},
     journal = {Illinois J. Math.},
     volume = {24},
     number = {4},
     year = {1980},
     pages = { 140-155},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1256047801}
}

Wulbert, Daniel E. On the characterization of complex rational approximations. Illinois J. Math., Tome 24 (1980) no. 4, pp.  140-155. http://gdmltest.u-ga.fr/item/1256047801/