Sage Interactions - Algebra
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Groebner fan of an ideal
by Marshall Hampton; (needs sage-2.11 or higher, with gfan-0.3 interface)
3D Groebner fan browser FIXME
by Marshall Hampton
Numerical Solutions of Polynomial Systems with PHCpack FIXME
by Marshall Hampton; requires phcpack optional package (PHCpack written by Jan Verschelde). The example below is a two-parameter deformation of the cyclic-6 problem. Solution paths are tracked through the parameter homotopy.