Abstract
Many specialists working in the field of the fractional calculus and its applications simply replace the integer differentiation and integration operators by their non-integer generalizations and do not give any serious justifications for this replacement. What kind of “Physics” lies in this mathematical replacement? Is it possible to justify this replacement or not for the given type of fractal and find the proper physical meaning? These or other similar questions are not discussed properly in the current papers related to this subject. In this paper new approach that relates to the procedure of the averaging of smooth functions on a fractal set with fractional integrals is suggested. This approach contains the previous one as a partial case and gives new solutions when the microscopic function entering into the structural-factor does not have finite value at N ≫ 1 (N is number of self-similar objects). The approach was tested on the spatial Cantor set having M bars with different symmetry. There are cases when the averaging procedure leads to the power-law exponent that does not coincide with the fractal dimension of the self-similar object averaged. These new results will help researches to understand more clearly the meaning of the fractional integral. The limits of applicability of this approach and class of fractal are specified.
Similar content being viewed by others
References
D. Baleanu, K. Diethelm, E. Scalas, J.J. Trujillo, Fractional Calculus Models and Numerical Methods. Ser. on Complexity, Nonlinearity and Chaos, World Scientific (2012).
A.A. Khamzin, R.R. Nigmatullin, I.I. Popov, B.A. Murzaliev, Microscopis model of dielectric α-relaxation in disordered media. Fract. Calc. Appl. Anal. 16, No 1 (2013), 158–170; DOI: 10.2478/s13540-013-0011-1; http://link.springer.com/article/10.2478/s13540-013-0011-1.
J.A.T. Machado, V. Kiryakova, F. Mainardi, A poster about old history of fractional calculus. Fract. Calc. Appl. Anal. 13, No 4 (2010), 447–454.
J.A.T. Machado, V. Kiryakova, F. Mainardi, Recent history of fractional calculus. Commun. in Nonlinear Sci. and Numer. Simulation 16 (2011), 1140–1153.
A. Le Mehaute, R.R. Nigmatullin, L. Nivanen, Fleches du Temps et Geometrie Fractale. Paris, Editions Hermes (1998), In French.
R.R. Nigmatullin, A. Le Mehaute, Is there a geometrical/physical meaning of the fractional integral with complex exponent? J. Non-Cryst. Sol. 351 (2005), 2888–2899.
R.R. Nigmatullin, Theory of dielectric relaxation in non-crystalline solids: From a set of micromotions to the averaged collective motion in the mesoscale region. Physica B: Physics of Condensed Matter 358 (2005), 201–215.
R.R. Nigmatullin, Fractional kinetic equations and universal decoupling of a memory function in mesoscale region. Phys. A 363 (2006), 282–298.
R.R. Nigmatullin, Strongly correlated variables and existence of the universal disctribution function for relative fluctuations. Phys. Wave Phen. 16, No 2 (2008), 119–145.
R.R. Nigmatullin, Universal distribution function for the stronglycorrelated fluctuations: General way for description of random sequences. Commun. Nonlin. Sci. 15 (2010), 637–647.
R.R. Nigmatullin, D. Baleanu, The derivation of the generalized functional equations describing self-similar processes. Fract. Calc. Appl. Anal. 15, No 4 (2012), 718–740; DOI: 10.2478/s13540-012-0049-5; http://link.springer.com/article/10.2478/s13540-012-0049-5.
L. Pietronero, E. Tosatti (Eds.), Fractals in Physics. Proc. 6-th Trieste International Symposium on Fractals in Physics, ICTP, Trieste, Italy, July 9–12, 1985, North-Holland (1986).
I. Podlubny, Fractional Differential Equations. Academic Press, San Diego (1999).
S.G. Samko, A.A. Kilbas, O.I. Marichev, Fractional Integrals and Derivatives. Theory and Applications. Gordon & Breach Sci. Publ., London — N. York (1993).
V.V. Uchaikin, Fractional Derivatives for Physicists and Engineers. Ser.: Nonlinear Phys. Sci., Springer (2013).
Author information
Authors and Affiliations
Corresponding author
About this article
Cite this article
Nigmatullin, R.R., Baleanu, D. New relationships connecting a class of fractal objects and fractional integrals in space. fcaa 16, 911–936 (2013). https://doi.org/10.2478/s13540-013-0056-1
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.2478/s13540-013-0056-1