%%%%%%% This is a SAMPLE LaTeX FILE called "samplemb.tex" for %%%%%%% preparing papers for journal "Mathematica Balkanica" %%%%%%% It uses auxiliary style-file "lathatmb.tex" %%%%%%%%%% %%% This file is prepared by Virginia Kiryakova %%%%%%%%%%%%%% %%% and contains only 2 pages extract of a paper ... %%%%%%%%% %%%% TO OBTAIN THE LATEX FILES "lathatmb.tex" and "samplemb.tex" %%%% CALL US BY E-MAIL: %%%% balmat@bgcict.acad.bg (Edit. Board, Mrs. Volya Alexandrova) %%%% virginia@math.acad.bg (Virginia Kiryakova) %% or download from home page: http://www.math.acad.bg/~virginia %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \input lathatmb \begin{document} %% {1} = {Title of Paper} \head{Generalized Fractional Calculus \\ [4pt] Special Functions and Integral Transforms \footnote{Partially supported by Grant No ....} } %% {2} = Author(s) Name(s), if more than one authors, %% names are numbered and the same for address at paper's end {Virginia S. Kiryakova} %% {3} = {Presented by ...} {Presented by P. Kenderov} %% {4} = {Short Title for the Running Heads} {Generalized Fractional Calculus, \dots} %% {5} = Author(s) Name(s), Initials only, without numbers %% if more than one author {V. Kiryakova} \abst{ In this survey paper we review the main ideas, results and applications of a generalized fractional calculus developed in the author's monograph [16]. This generalization of the classical fractional calculus is based on the essential use of the special functions (Meijer's $G$- and $H$-functions) as kernel-functions ... } %%%% Commands like "\vskip -18pt" below are only used to obtain %%%% as short as possible sample version of a paper for "MB" %%%% For macros not used here, see definitions in "lathatmb.tex", %%%% like macros for theorems, proofs, lemmas, remarks, etc. \bigskip \sect{1. Introduction} The generalized fractional calculus presented here is based on the notion of {\it generalized operators of fractional integration\/} of Riemann-Liouville and Weyl type %\vskip -18pt $$ I f(x) = x^{\delta} \int \limits _0^1 \Phi (\sigma) \sigma^{\gamma} f(x\sigma) d\sigma\ \ ;\ \ W f(x) = x^{\delta} \int \limits_1^{\infty} \Phi({\frac 1 {\sigma}}) \sigma^{- \gamma -1} f(x\sigma) d\sigma \eqno{(1.1)} $$ %\vskip -10pt \noindent (Kalla [11]), where $\Phi (\sigma)$ is an arbitrary elementary or special kernel-function ... %\vskip -6pt \defi{Definition 1.1.} (see ...) By a {\it Meijer's $G$-function \/} we mean the generalized hypergeometric function defined by means of the contour integral %\vskip -16pt $$ G_{p,q}^{m,n} \left[ \sigma \left| \begin{array} {c} (a_k)_1^p \\ (b_k)_1^q \\ \end{array} \right.\right] = \frac 1{2\pi i} \int\limits_{\cal{L}}{ \frac {\displaystyle \prod_{k=1}^m \Gamma(b_k-s) \prod_{j=1}^n \Gamma\left(1-a_j+s\right)} {\displaystyle \prod_{k=m+1}^q \Gamma(1-b_k+s) \prod_{j=n+1}^p \Gamma\left(a_j-s\right)}} \sigma^s \, ds , \eqno{(1.2)} $$ %\vskip -14pt \noindent where .... %\vskip -6pt \defi{Definition 1.2.} Let $m \ge 1$ be integer, $\beta > 0, \gamma_1,...,\gamma_m$ and $\delta_1 \ge 0,$ $\dots,\delta_m \ge 0$ be arbitrary real numbers. By a {\it generalized (multiple) Erd\'elyi-Kober operator of integration\/} of multiorder $\delta = (\delta_1,...,\delta_m)$ we mean an integral operator %\vskip -15pt $$ I_{\beta,m}^{(\gamma_k),(\delta_k)} f(x) = \int\limits_0^1 G_{m,m}^{m,0} \left[ \sigma \left| \begin{array} {c} (\gamma_k+\delta_k)_1^m \\ (\gamma_k)_1^m \\ \end{array} \right.\right] f(x\sigma^{\frac 1 {\beta}}) \, d\sigma. \eqno{(1.6)} $$ %\vskip -12pt \noindent Then, .... \sect{2. Basic results of the generalized fractional calculus} The main {\it functional spaces} .... %\vskip -4pt \bth{Theorem 2.1.} Each multiple E.-K. fractional integral (1.6) preserves the power functions in $C_{\alpha}, \alpha \ge \max\limits_k \left[-\beta\left(\gamma_k + 1\right)\right]$ up to a constant multiplier: %\vskip -18pt $$ I_{\left(\beta_k\right), m}^{\left(\gamma_k\right), \left(\delta_k\right)} \left\{x^p\right\} = c_p x^p,\ p > \alpha, \quad {\rm where\ } c_p = \prod\limits_{k=1}^m {\frac {\Gamma \left(\gamma_k + {\frac p {\beta_k}} + 1\right)} {\Gamma \left(\gamma_k + \delta_k + {\frac p {\beta_k}} + 1\right)}} \eqno{(2.1)} $$ %\vskip -8pt \noindent and it is an invertible mapping $ I_{\left(\beta_k\right), m}^{\left(\gamma_k\right), \left(\delta_k\right)}: C_{\alpha} \longrightarrow C_{\alpha}^{\left(\eta_1 + \dots + \eta_m\right)} \subset C_{\alpha} $ ... \eth \dok First we verify the correctness of .... \dokend %%% to make a black box for the end of proof \sect{3. Applications to the generalized hypergeometric functions \\ and Laplace type integral transforms} %\vskip -6pt ....... %\vskip -6pt \bcor{Corollary 3.5} Let all the differences $a_k - b_k = \eta_k, k=1,\dots,p$ be nonnegative integers. Then, the differintegral operator in (3.15) turns into a differential operator $D_{\eta}$ of integer order $\eta = \eta_1 + \dots + \eta_k \ge 0$ and of form (1.12), namely: %\vskip -15pt $$ _pF_p \left(b_1 + \eta_1, \dots, b_p + \eta_p; b_1, \dots, b_p; x \right) = Q_p (x) \left\{ \exp x\right\}. \eqno{(3.18)} $$ \ecor %\vskip -15pt Differential representation (3.18) gives an example how differential formulas for the ``spherical'' g.h.f-s introduced in [16] can be used for explicit calculation ... %\vskip -8pt \example{3.8.} In particular, for $m = \beta = 2$, $\gamma_{1,2} = \pm {\frac {\nu} 2}$ ... %%%%%%%%%%%%%%% References \sect{References} \leftskip 2pc \parindent -2pc \dotfill %%% here is only extract of two items..., %%% the first for books and the second for articles in journals [15] \sperr{V. Kiryakova.} {\it Generalized Fractional Calculus and Applications}, Longman, Harlow, 1994. [16] V. K\,i\,r\,y\,a\,k\,o\,v\,a. All the special functions are fractional differintegrals of elementary functions, {\it J. Phys. A: Math. \& Gen.}, {\bf 30}, No 14, 1997, 5085-5103. \vskip 0.5cm %%% Author's Address(es); if more than one authors, %%% addresses are numbered like authors in beginning of paper {\it Institute of Mathematics and Informatics \hfill Received xx.xx.199x %%% specified by Edit. Board Bulgarian Academy of Sciences Sofia 1090, BULGARIA E-MAIL: virginia@math.acad.bg } \end{document} %================ END OF FILE ``mbsample.tex''===========