Summary
It is well known thatsome implicit Runge-Kutta methods are equivalent to collocation methods. This fact permits very short and natural proofs of order andA, B, AN, BN-stability properties for this subclass of methods (see [9] and [10]). The present paper answers the natural question, ifall RK methods can be considered as a somewhat “perturbed” collocation. After having introduced this notion we give a proof on the order of the method and discuss their stability properties. Much of known theory becomes simple and beautiful.
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Nørsett, S.P., Wanner, G. Perturbed collocation and Runge-Kutta methods. Numer. Math. 38, 193–208 (1981). https://doi.org/10.1007/BF01397089
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DOI: https://doi.org/10.1007/BF01397089