Journal
DISCRETE & COMPUTATIONAL GEOMETRY
Volume 44, Issue 1, Pages 96-148Publisher
SPRINGER
DOI: 10.1007/s00454-010-9242-7
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Funding
- [RFBR-JSPS-06-01-91063]
- [RFBR-07-01-00593]
- [INTAS-05-7805]
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For a system of polynomial equations, whose coefficients depend on parameters, the Newton polyhedron of its discriminant is computed in terms of the Newton polyhedra of the coefficients. This leads to an explicit formula (involving Euler obstructions of toric varieties) in the unmixed case, suggests certain open questions in general, and generalizes a number of similar known results (Gelfand et al. in Discriminants, resultants, and multidimensional determinants. Birkhauser, Boston, 1994; Sturmfels in J. Algebraic Comb. 32(2):207-236, 1994; McDonald in Discrete Comput. Geom. 27:501-529, 2002; Gonzalez-Perez in Can. J. Math. 52(2):348-368, 2000; Esterov and Khovanskii in Funct. Anal. Math. 2(1), 2008).
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