Contractive multivariate zipper fractal interpolation functions. (English) Zbl 07845565
Summary: In this paper we introduce a new general multivariate fractal interpolation scheme using elements of the zipper methodology. Under the assumption that the corresponding Read-Bajraktarevic operator is well-defined, we enlarge the previous frameworks occurring in the literature, considering the constitutive functions of the iterated function system whose attractor is the graph of the interpolant to be just contractive in the last variable (so, in particular, they can be Banach contractions, Matkowski contractions, or Meir-Keeler contractions in the last variable). The main difficulty that should be overcome in this multivariate framework is the well definedness of the above mentioned operator. We provide three instances when it is guaranteed. We also display some examples that emphasize the generality of our scheme.
MSC:
| 28A80 | Fractals |
| 41A05 | Interpolation in approximation theory |
| 58F12 | Structure of attractors (and repellors) (MSC1991) |
Keywords:
multivariate fractal interpolation function; zipper; Edelstein contraction; Picard operatorReferences:
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