Certified, Efficient and Sharp Univariate Taylor Models in COQ
Résumé
We present a formalisation, within the COQ proof assistant, of univariate Taylor models. This formalisation being executable, we get a generic library whose correctness has been formally proved and with which one can effectively compute rigorous and sharp approximations of univariate functions composed of usual functions such as 1/x, sqrt(x), exp(x), sin(x) among others. In this paper, we present the key parts of the formalisation and we evaluate the quality of our certified library on a set of examples.
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