\[f(z)=\left[z_{0}\right]f+(z-z_{0})\left[z_{0},z_{1}\right]f+(z-z_{0})(z-z_{1})%
\left[z_{0},z_{1},z_{2}\right]f+\cdots+(z-z_{0})(z-z_{1})\cdots(z-z_{n-1})%
\left[z_{0},z_{1},\dots,z_{n}\right]f+R_{n}(z).\]