CM2Residual  Strategy for eliminationMatrix.
Synopsis

 Usage:
eliminationMatrix(..., Strategy => CM2Residual)

Consequences:

Suppose given a homogeneous ideal locally complete intersection CohenMacaulay of codimension 2,

$J=(g_1,..,g_n)$

, such that

$I=(f_1,..,f_m)$

is included in J and (I:J) is a residual intersection. Let H be the matrix that I=J.H. Let R be the matrix of the first syzygies of J. This function computes an elimination matrix corresponding to the residual resultant over V(I) over V(J).