Inequalities of Jackson type for ridge and polynomial approximation of harmonic functions

V.F. Babenko (Oles Honchar Dnipropetrovsk National University),
D.A. Levchenko (Oles Honchar Dnipropetrovsk National University)


New sharp Jackson type inequalities for ridge and polinomial approximation of some classes of functions harmonic inside unit disk are obtained.


best approximation; modulus of continuity; Jackson type inequalities; harmonic function; ridge approximation


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ISSN (Online): 2664-5009
ISSN (Print): 2664-4991