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Implementing the Tangent Graeffe root finding method

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Implementing the Tangent Graeffe root finding method
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Monagan, Michael
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The tangent Graeffe method has been developed for the efficient computation of single roots of polynomials over finite fields with multiplicative groups of smooth order. It is a key ingredient of sparse interpolation using geometric progressions, in the case when blackbox evaluations are comparatively cheap. In this paper, we improve the complexity of the method by a constant factor and we report on a new implementation of the method and a first parallel implementation.
Keywords fast root finding over finite fields sparse polynomial interpolation

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