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Birational properties of the gap subresultant varieties

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons44379

El Kahoui,  M'hammed
Algorithms and Complexity, MPI for Informatics, Max Planck Society;

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El Kahoui, M. (2005). Birational properties of the gap subresultant varieties. Journal of Symbolic Computation, 39, 61-71.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-25F5-B
Abstract
In this paper we address the problem of understanding the gaps that may occur in the subresultant sequence of two polynomials.We define the gap subresultant varieties and prove that they are rational and have the expected dimension. We also give explicitly their corresponding prime ideals.