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arxiv: math/0512335 · v1 · submitted 2005-12-14 · 🧮 math.CA

Jacobians and branch points of real analytic open maps

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keywords analyticbranchopenpointschangecorollarydeterminantdimension
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The main result is that the Jacobian determinant of an analytic open map from Euclidean n-space to itself does not change sign. A corollary of the proof is that the set of branch points has dimension < n-1.

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