Abstract
Though a Hermite subdivision scheme is non-stationary by nature, its non-stationarity can be of two types, making useful the distinction between Inherently Stationary and Inherently Non-Stationary Hermite subdivision schemes. This paper focuses on the class of inherently stationary, dual non-interpolatory Hermite subdivision schemes that can be obtained from known Hermite interpolatory ones, by applying a generalization of the de Rham corner cutting strategy. Exploiting specific tools for the analysis of inherently stationary Hermite subdivision schemes we show that, giving up the interpolation condition, the smoothness of the associated basic limit function can be increased by one, while its support width is only enlarged by one. To accomplish the analysis of de Rham-type Hermite subdivision schemes two new theoretical results are derived and the new notion of \(HC^{\ell }\)-convergence is introduced. It allows the construction of Hermite-type subdivision schemes of order \(d+1\) with the first element of the vector valued limit function having regularity \(\ell \ge d\).
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Acknowledgments
This work was partially supported by Italian funds from INdAM-GNCS. Special thanks go to the anonymous referees for their useful comments.
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Communicated by Michael Vogelius.
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Conti, C., Merrien, JL. & Romani, L. Dual Hermite subdivision schemes of de Rham-type. Bit Numer Math 54, 955–977 (2014). https://doi.org/10.1007/s10543-014-0495-z
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DOI: https://doi.org/10.1007/s10543-014-0495-z
Keywords
- Vector subdivision
- Inherently stationary Hermite subdivision
- De Rham strategy
- Dual parametrization
- Convergence and smoothness analysis