R4.
idnp = R4.ideal([x*y*z+x^2*z-x*y,x*w^2-z,x*w^4+x*z])
gfnp = idnp.groebner_fan()
show(gfnp.render3d(), frame = False)
You have to follow the link for the plot since I am not sure how to include JMol applets on a blogger post.
Showing posts with label Groebner fan. Show all posts
Showing posts with label Groebner fan. Show all posts
Friday, May 9, 2008
Anders Jensen's nonregular Groebner fan in 3D
The only example of a non-regular Groebner fan that I am aware of is the following one from Anders Jensen's 2007 thesis, here plotted in 3D with Sage and gfan:
R4. = PolynomialRing(QQ,4)
idnp = R4.ideal([x*y*z+x^2*z-x*y,x*w^2-z,x*w^4+x*z])
gfnp = idnp.groebner_fan()
show(gfnp.render3d(), frame = False)
You have to follow the link for the plot since I am not sure how to include JMol applets on a blogger post.
R4.
idnp = R4.ideal([x*y*z+x^2*z-x*y,x*w^2-z,x*w^4+x*z])
gfnp = idnp.groebner_fan()
show(gfnp.render3d(), frame = False)
You have to follow the link for the plot since I am not sure how to include JMol applets on a blogger post.
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