RELATIONSHIP BETWEEN UPPER BOX DIMENSION OF CONTINUOUS FUNCTIONS AND ORDERS OF WEYL FRACTIONAL INTEGRAL

H. B. Gao, Y. S. Liang and W. Xiao
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H. B. Gao: School of Science, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
Y. S. Liang: School of Science, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
W. Xiao: School of Science, Nanjing University of Science and Technology, Nanjing 210094, P. R. China

FRACTALS (fractals), 2021, vol. 29, issue 07, 1-15

Abstract: In this paper, we mainly investigate relationship between fractal dimension of continuous functions and orders of Weyl fractional integrals. If a continuous function defined on a closed interval is of bounded variation, its Weyl fractional integral must still be a continuous function with bounded variation. Thus, both its Weyl fractional integral and itself have Box dimension one. If a continuous function satisfies Hölder condition, we give estimation of fractal dimension of its Weyl fractional integral. If a Hölder continuous function is equal to 0 on ℠/[a,b], a better estimation of fractal dimension can be obtained. When a function is continuous on ℠and its Weyl fractional integral is well defined, a general estimation of upper Box dimension of Weyl fractional integral of the function has been given which is strictly less than two. In the end, it has been proved that upper Box dimension of Weyl fractional integrals of continuous functions is no more than upper Box dimension of original functions.

Keywords: Fractal Dimension; Weyl Fractional Integral; Variation; Hölder Condition (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1142/S0218348X21502236

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