Abstract
We begin with a survey of the notion of atypical values of R. Thom. We give a theorem on the atypical values of complex polynomials which generalizes a theorem of Broughton (On the topology of polynomial hypersurfaces in singularities, Part 1, 167–178, proceedings of symposia in pure mathematics, vol 40. American Mathematicaol Society, Providence, 1983) and Broughton (Milnor numbers and the topology of polynomial hypersurfaces. Invent Math 92:217–241, 1988). For this purpose we introduce the notion of atypical value from infinity. Our proofs are geometrical. We end with some open problems to understand the difference between tame polynomials at infinity and polynomials without atypical values from infinity.
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Work partially supported by DGICYT Grant MTM2015-64013-P.
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Lê, D.T., Nuño Ballesteros, J.J. A remark on the topology of complex polynomial functions. RACSAM 113, 3977–3994 (2019). https://doi.org/10.1007/s13398-018-0611-z
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DOI: https://doi.org/10.1007/s13398-018-0611-z