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eliminationMatrices :: ciResidual

ciResidual -- Strategy for eliminationMatrix.



The first argument is a list of homogeneous polynomials J=(g1,..,gm) forming a complete intersection with respect to the variables 'varList'. Given a system of homogeneous I=(f1,..,fn), such that I is included in J and (I:J) is a residual intersection, one wants to to compute a sort of resultant of (I:J). The second argument is the matrix M such that I=J.M. The output is a generically (with respect to the other variables than 'varList') surjective matrix such that the determinant of a maximal minor is a multiple of the resultant of I on the closure of the complementary of V(J) in V(I). Such a minor can be obtain withmaxMinor

For the programmer

The object ciResidual is a symbol.