ALGEBRAIC APPROXIMATION OF GERMS OF REAL ANALYTIC SETS

作者:Ferrarotti M*; Fortuna E; Wilson L
来源:Proceedings of the American Mathematical Society, 2010, 138(5): 1537-1548.
DOI:10.1090/S0002-9939-10-10283-4

摘要

Two subanalytic subsets of R(n) are s-equivalent at a collation point, say O, if the Hausdorff distance between their intersections with the sphere centered at O of radius r goes to zero faster than r(s). In the present paper we investigate the existence of an algebraic representative in every s-equivalence class of subanalytic sets. First we prove that such a result holds for the zero-set V(f) of an analytic map f when the regular points of f are dense in V(f). Moreover we present some results concerning the algebraic approximation of the image of a real analytic map f under the hypothesis that f(-1) (O) = {O}.

  • 出版日期2010-5