Abstract
We prove that a semialgebraic differentiable mapping has a generalized critical values set of measure zero. Moreover, if the mapping is C2 we obtain, by a generalisation of Ehresmann's fibration theorem due to P. J. Rabier [20], a locally trivial fibration over the complement of this set. In the complex case, we prove that the set of generalized critical values of a polynomial mapping is a proper algebraic set.
Citation
K. Kurdyka. P. Orro. S. Simon. "Semialgebraic Sard Theorem for Generalized Critical Values." J. Differential Geom. 56 (1) 67 - 92, September, 2000. https://doi.org/10.4310/jdg/1090347525
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