difference operator

(redirected from First difference)

difference operator

[′dif·rəns ‚äp·ə‚rād·ər]
(mathematics)
One of several operators, such as the displacement operator, forward difference operator, or central mean operator, which can be used to conveniently express formulas for interpolation or numerical calculation or integration of functions and can be manipulated as algebraic quantities.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in classic literature ?
The effect of the first difference is, on the one hand, to refine and enlarge the public views, by passing them through the medium of a chosen body of citizens, whose wisdom may best discern the true interest of their country, and whose patriotism and love of justice will be least likely to sacrifice it to temporary or partial considerations.
Perhaps the very first difference they had ever had: Mrs.
Caption: Figure 3: (a) Monthly number of deaths is plotted against its first differenced series, acf (b) and pacf (c) plots for the first difference in monthly number of deaths.
Also, DGDP and DSulfur are the first difference series of LGDP (GDP) and LSulfur (S[O.sub.2]), respectively.
Jenson Button and Lewis Hamilton have had their first difference of opinion over the future direction of their relationship at McLaren.
On the other hand, the series in first difference reject the null hypothesis of unit root.
The first difference is that the entire film arrives inside a box about the same size as an old LP carrying case and the film itself is a box-like computer placed directly into the projector.
The first difference between the two is that while L&W was written by Church of England scholars, Oxford is the work of an international panel of world-class liturgists--including Canada's Rev.
Interestingly, the first difference between those who are consistently effective at crucial conversations and the rest of us is how they think about the conversation itself.
If the real exchange rate series is I(1) process, an ARIMA model of the first difference of the series is estimated.
Ideal Score minus Real Score = Person Environment Fit Score (PEF) (first difference)
The Positive First Difference Test is a snap to program, tally with a pencil and paper or incorporate into a spreadsheet.