next up previous contents
Next: Symmetric set structure Up: RoCo: root counting Previous: Modeling the structure

Linear-product start systems

For the system in (8), we construct, based on , the linear-product start system:

 

For every random choice of the coefficients, except for a set of measure zero, the system will have seven finite regular solutions. With every tuple of sets in (9) there corresponds a linear system with a nonsingular matrix. Of crucial importance is the observation that solving corresponds to computing .

Every monomial in the original system occurs also in a linear-product start system constructed from a supporting set structure, albeit with a different coefficient. In fact, set structures satisfying this property are defined to be supporting. Hereby we proved that by using a linear-product start system based on a supporting set structure we can obtain all isolated solutions.



Jan Verschelde
Thu Nov 21 10:50:01 MET 1996