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On the non-analyticity locus of an arc-analytic function

Abstract : A function is called arc-analytic if it is real analytic on each real analytic arc. In real analytic geometry there are many examples of arc-analytic functions that are not real analytic. Arc analytic functions appear while studying the arc-symmetric sets and the blow-analytic equivalence. In this paper we show that the non-analyticity locus of an arc-analytic function is arc-symmetric. We discuss also the behavior of the non-analyticity locus under blowings-up. By a result of Bierstone and Milman a big class of arc-analytic function, namely those that satisfy a polynomial equation with real analytic coefficients, can be made analytic by a sequence of global blowings-up with smooth centers. We show that these centers can be chosen, at each stage of the resolution, inside the non-analyticity locus.
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Contributor : Krzysztof Kurdyka <>
Submitted on : Thursday, May 28, 2009 - 2:23:41 PM
Last modification on : Monday, March 9, 2020 - 6:15:58 PM
Document(s) archivé(s) le : Monday, October 15, 2012 - 11:20:22 AM


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  • HAL Id : hal-00389210, version 1


Krzysztof Kurdyka, Adam Parusinski. On the non-analyticity locus of an arc-analytic function. 2009. ⟨hal-00389210⟩



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