Abstract
In this work we deduce explicit formulae for the elements of the matrices representing the action of integro-differential operators over the coefficients of generalized Fourier series. Our formulae are obtained by performing operations on the bases of orthogonal polynomials and result directly from the three-term recurrence relation satisfied by the polynomials. Moreover we give exact formulae for the coefficients for some families of orthogonal polynomials. Some tests are given to demonstrate the robustness of the formulas presented.
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Acknowledgements
This work was partially supported by CMUP (UID/ MAT/ 00144/ 2019), which is funded by FCT (Portugal) with national (MEC) and European structural funds through the programs FEDER, under the partnership agreement PT2020.
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Matos, J.M.A., Rodrigues, M.J. & de Matos, J.C. Explicit Formulae for Integro-Differential Operational Matrices. Math.Comput.Sci. 15, 45–61 (2021). https://doi.org/10.1007/s11786-020-00465-1
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DOI: https://doi.org/10.1007/s11786-020-00465-1