The forward difference is a Finite Difference defined by
Newton's Forward Difference Formula expresses as the sum of the th forward differences
See also Backward Difference, Central Difference, Difference Equation, Divided Difference, Reciprocal Difference
Abramowitz, M. and Stegun, C. A. (Eds.).
Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, 9th printing.
New York: Dover, p. 877, 1972.