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Annihilation operators for exponential spaces in subdivision

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  • Conti, Costanza
  • López-Ureña, Sergio
  • Romani, Lucia

Abstract

We investigate properties of differential and difference operators annihilating certain finite-dimensional spaces of exponential functions in two variables that are connected to the representation of real-valued trigonometric and hyperbolic functions. Although exponential functions appear in a variety of contexts, the motivation behind this technical note comes from considering subdivision schemes where annihilation operators play an important role. Indeed, subdivision schemes with the capability of preserving exponential functions can be used to obtain an exact description of surfaces parametrized in terms of trigonometric and hyperbolic functions, and annihilation operators are useful to automatically detect the frequencies of such functions.

Suggested Citation

  • Conti, Costanza & López-Ureña, Sergio & Romani, Lucia, 2022. "Annihilation operators for exponential spaces in subdivision," Applied Mathematics and Computation, Elsevier, vol. 418(C).
    • Handle: RePEc:eee:apmaco:v:418:y:2022:i:c:s009630032100878x
    DOI: 10.1016/j.amc.2021.126796
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    References listed on IDEAS

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    1. Romani, Lucia, 2021. "Creating a bridge between cardinal Br-spline fundamental functions for interpolation and subdivision," Applied Mathematics and Computation, Elsevier, vol. 401(C).
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