The Taylor series truncation error of the central differencing scheme is second order. The encoding of the 63 quantized AC coefficients does not use such prediction differencing. Similarly we can apply other differencing formulas in a recursive manner. In applied mathematics, the central differencing scheme is a finite difference method. Data compression can be viewed as a special case of data differencing. It shares the data differencing and copying tool, rsync, with BackupPC, and several others. The term "differential compression" is used to emphasize the data differencing connection. The upwind differencing scheme formulation is conservative. This scheme formed a basis for the compressive differencing schemes. Movement can then be detected using image differencing techniques. AICc can only be used to compare ARIMA models with the same orders of differencing. Alan Turing discovered this weakness and invented the differencing technique described below to exploit it. The satellite-clock errors will be approximately eliminated by this between receiver differencing. For ARIMAs with different orders of differencing, RMSE can be used for model comparison. Similarly, processes with one or more unit roots can be made stationary through differencing.