Open AccessApproximation with certain Post-Widder operators
Author(s) -
Vijay Gupta,
Prerna Maheshwari
Publication year - 2019
Publication title -
publications de l'institut mathématique
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.246
H-Index - 17
eISSN - 1820-7405
pISSN - 0350-1302
DOI - 10.2298/pim1919131g
Subject(s) - exponential function , mathematics , operator theory , asymptotic formula , function (biology) , exponential growth , mathematical analysis , biology , evolutionary biology
We consider a modification of well known Post-Widder operators, which preserve the exponential function. We estimate a direct estimate and a quantitative asymptotic formula for the modified operators.