Szász–Mirakyan operator

Summary

The Szász–Mirakyan operators approximate functions on the half-line $[0, \infty)$ by series built from the Poisson distribution. They play for $[0, \infty)$ the role that Bernstein polynomials play for $[0, 1]$. They are positive linear operators, so their convergence follows from Korovkin's theorem.