Singular Manual: signcond_lib

> | ### D.8.9 signcond_lib Library: signcond.lib Purpose: Routines for computing realizable sign conditions Author: Enrique A. Tobis, etobis@dc.uba.ar Overview: Routines to determine the number of solutions of a multivariate polynomial system which satisfy a given sign configuration. References: Basu, Pollack, Roy, "Algorithms in Real Algebraic Geometry", Springer, 2003. Procedures:
> D.8.9.1 signcnd |  | The sign conditions realized by polynomials of P on a V(I)
> D.8.9.2 psigncnd |  | Pretty prints the output of signcnd (l)
> D.8.9.3 firstoct |  | The number of elements of V(I) with every coordinate > 0

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