I'll try to test it. But if I remember correctly, I had to upgrade ipython
first and then install trac 12719. Otherwise ./sage -br fails to start sage.
Robert
Dne pondělí, 17. září 2012 22:39:31 UTC+2 Jason Grout napsal(a):
On 9/17/12 12:29 PM, kcrisman wrote:
Could one of you post a
I had to workaround against this counterintuitive results.
5.2 and 5.3 on linux x86_64
sage: K.x1,x2,x3=PolynomialRing(QQ)
sage: p1=(x2-1)*(x3+2)
sage: p2=(x2-1)*(x3+3)
sage: p1.resultant(p2)
1
sage: K_.x2,x3=PolynomialRing(QQ)
sage: p1_=K_(p1)
sage: p2_=K_(p2)
sage: p1_.resultant(p2_)
0
sage:
Hi,
I'm not sure if I understand what is counterintuitive about the results.
* Georgi Guninski gunin...@guninski.com [2012-09-18 16:55:37 +0300]:
sage: K.x1,x2,x3=PolynomialRing(QQ)
sage: p1=(x2-1)*(x3+2)
sage: p2=(x2-1)*(x3+3)
sage: p1.resultant(p2)
1
This is the resultant of p1 and p2
The plot routine for polyhedra (and also the render_solid and the
render_wireframe method) seem to plot only part of the polyhedron.
Take as an example
q1=Polyhedron( vertices=[[0,0]], lines=[[-2,1]], rays=[[0,42]])
q.plot()
Here only the line [-2,1] and a strip of length 1 in direction [0,1]
There is not enough space on your screen to plot non-compact polyhedra, so
what exactly do you expect as output? Right now, the compact part plus
(minkowski sum) the interval (origin, ray generator) is drawn. I guess you
expect the whole half plane clipped by the plot window? How big should the
Thanks for the fast reply!
On Tuesday, September 18, 2012 6:24:29 PM UTC+2, Volker Braun wrote:
There is not enough space on your screen to plot non-compact polyhedra, so
what exactly do you expect as output?
well, the same is true for function plotting but f=3*x; plot(f) gives a
