A remark on a modified Szász-Mirakjan operator
We prove that, for a sequence of positive numbers δ(n), if as , to guarantee that the modified Szász-Mirakjan operators converge to f(x) at every point, f must be identically zero.
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A review of procedures for summing Kapteyn series in mathematical physics.
Tautz, R.C., Lerche, I. (2009)
Advances in Mathematical Physics
A survey of certain results on strong approximation by orthogonal series
László Leindler (2004)
Open Mathematics
This is a survey of results in a particular direction of the theory of strong approximation by orthogonal series, related mostly with author's contributions to the subject.
A survey of weighted polynomial approximation with exponential weights.
Lubinsky, Doron (2007)
Surveys in Approximation Theory (SAT)[electronic only]
Algebraische Analysis [Book]
Augustin Louis Cauchy, Carl Itzigsohn (1885)
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