September 30, 2010 Update to Functional Equations Reference (version 1.3) This is a substantial update of this reference document. The most important addition is the chain and substitution rules for arithmetic difference calculus (ADC)….

August 25, 2010 Update to Functional Equations Reference I have updated the Reference for Functional Equations. I have added several entries to the tables, updated the graphs, added some new graphs, added…

February 26, 2009 A Reference for Functional Equations I have not posted in a while; one reason is that I got sucked into some interesting mathematics; the work-in-progress Reference for Functional Equations is…

Original image by openDemocracy. The document below contains tables and formulas useful for working with functional equations, especially difference equations, and to a lesser extent,…