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Fractal Frames of Functions on the Rectangle
2021
Fractal and Fractional
In this paper, we define fractal bases and fractal frames of L2(I×J), where I and J are real compact intervals, in order to approximate two-dimensional square-integrable maps whose domain is a rectangle, using the identification of L2(I×J) with the tensor product space L2(I)⨂L2(J). First, we recall the procedure of constructing a fractal perturbation of a continuous or integrable function. Then, we define fractal frames and bases of L2(I×J) composed of product of such fractal functions. We also
doi:10.3390/fractalfract5020042
fatcat:6pduv3ybibgafpz4mb26w5fvgi