A note on correctors with an arbitrary number of nonstep points

In this note maximal order,k step correctors with one nonstep point for the solution ofy=f(x,y),y(x₀)=y₀, introduced by Gragg and Stetter [1] are extended to an arbitrary numbers of nonstep points. These correctors have order 2k + 2s, are proved stable fork8,s2, and unstable for largek.