Differences of fractional order
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- by J. B. Díaz and T. J. Osler PDF
- Math. Comp. 28 (1974), 185-202 Request permission
Abstract:
Derivatives of fractional order, ${D^\alpha }f$, have been considered extensively in the literature. However, little attention seems to have been given to finite differences of fractional order, ${\Delta ^\alpha }f$. In this paper, a definition of differences of arbitrary order is presented, and ${\Delta ^\alpha }f$ is computed for several specific functions f (Table 2.1). We find that the operator ${\Delta ^\alpha }$ is closely related to the contour integral which defines Meijer’s G-function. A Leibniz rule for the fractional difference of the product of two functions is discovered and used to generate series expansions involving the special functions.References
- G. T. Cargo and O. Shisha, Zeros of polynomials and fractional order differences of their coefficients, J. Math. Anal. Appl. 7 (1963), 176–182. MR 158974, DOI 10.1016/0022-247X(63)90046-5 E. T. Copson, An Introduction to the Theory of Functions of a Complex Variable, Oxford Univ. Press, Oxford, 1935.
- Harold T. Davis, The summation of series, The Principia Press of Trinity University, San Antonio, Tex., 1962. MR 0141908
- B. Kuttner, On differences of fractional order, Proc. London Math. Soc. (3) 7 (1957), 453–466. MR 94618, DOI 10.1112/plms/s3-7.1.453 Y. L. Luke, The Special Functions and Their Approximations. Vols. I, II, Math. in Sci. and Engineering, vol. 53, Academic Press, New York, 1969. MR 39 #3039; MR 40 #2909.
- Thomas J. Osler, Leibniz rule for fractional derivatives generalized and an application to infinite series, SIAM J. Appl. Math. 18 (1970), 658–674. MR 260942, DOI 10.1137/0118059
- Thomas J. Osler, The fractional derivative of a composite function, SIAM J. Math. Anal. 1 (1970), 288–293. MR 260943, DOI 10.1137/0501026
- Thomas J. Osler, Taylor’s series generalized for fractional derivatives and applications, SIAM J. Math. Anal. 2 (1971), 37–48. MR 294612, DOI 10.1137/0502004
- T. J. Osler, Mathematical Notes: Fractional Derivatives and Leibniz Rule, Amer. Math. Monthly 78 (1971), no. 6, 645–649. MR 1536368, DOI 10.2307/2316573
- Thomas J. Osler, A further extension of the Leibniz rule to fractional derivatives and its relation to Parseval’s formula, SIAM J. Math. Anal. 3 (1972), 1–16. MR 323970, DOI 10.1137/0503001
- Thomas J. Osler, An integral analogue of Taylor’s series and its use in computing Fourier transforms, Math. Comp. 26 (1972), 449–460. MR 306828, DOI 10.1090/S0025-5718-1972-0306828-1
- Thomas J. Osler, A further extension of the Leibniz rule to fractional derivatives and its relation to Parseval’s formula, SIAM J. Math. Anal. 3 (1972), 1–16. MR 323970, DOI 10.1137/0503001
- Thomas J. Osler, The integral analogue of the Leibniz rule, Math. Comp. 26 (1972), 903–915. MR 314240, DOI 10.1090/S0025-5718-1972-0314240-4
- Ian N. Sneddon, Fourier Transforms, McGraw-Hill Book Co., Inc., New York-Toronto-London, 1951. MR 0041963 E. C. Titchmarsh, The Theory of Functions, 2nd ed., Oxford Univ. Press, Oxford, 1939.
Additional Information
- © Copyright 1974 American Mathematical Society
- Journal: Math. Comp. 28 (1974), 185-202
- MSC: Primary 39A05; Secondary 26A33
- DOI: https://doi.org/10.1090/S0025-5718-1974-0346352-5
- MathSciNet review: 0346352