Skip to main content
Jacobians and branch points of real analytic open maps
- Author(s): Hirsch, MW
- et al.
Published Web Locationhttps://doi.org/10.1007/s00010-002-8006-8
The main result is that the Jacobian determinant of an analytic open map f: ℝn → ℝn does not change sign. A corollary of the proof is that the set of branch points of f has dimension ≤ n - 2. © Birkhäuser Verlag, 2002.