-
```
The following error popped up while testing:
File "C:\Documents and Settings\chris\sympy\sympy\polys\polytools.py",
line 5053, in groebner
raise DomainError("can't compute a Groebner…
-
```
This is my example that I usually show:
In [1]: f_1 = x**2 + y + z - 1
In [2]: f_2 = x + y**2 + z - 1
In [3]: f_3 = x + y + z**2 - 1
In [4]: solve([f_1, f_2, f_3], x, y, z)
-------------------…
-
```
problem:
roots = solve_poly_system([((x-5)**2/250000 + (y-5/10)**2/250000) - 1, x],x,y)
is OK
while:
roots = solve_poly_system([((x-5.0)**2/250000 + (y-5.0/10)**2/250000) - 1, x],x,y)
is KO!…
-
bc.. In [1]: e = Ellipse(Point(0,0), 3, 2)
In [2]: t = e.tangent_line(e.random_point())
In [3]: e.is_tangent(t)
Out[3]: False
Obviously [2] and [3] are in contradiction. By plotting the result, [2]…
-
On [sage-devel](https://groups.google.com/forum/#!topic/sage-devel/IeIeHsnNIf4), some discussion on `IntegerModRing` and its relation to categories took place. I would summarize the discussion and i…
-
```
I found two equations, that solve_poly_system handles in strange manner.
eq1 = 15/2 - 5*y/2 - 3*x/4 + y**2/4 + x**2/16 # expand(Ellipse(Point(6, 5), 4, 2).equation())
eq2 = 261/4 - 16*x - 3*y/4…
-
```
The following is the wrong solution to the equation set:
>>> a=solve([x+x*y-3,y+x*y-4]);a
{x: 3, y: 1}
Although this satisfies the second equation, it does not satisfy the first.
In solve, this…
-
This patch adds a class for rewriting systems for finitely presented groups. Rewriting systems can be used (when the Knuth-Bendix algorithms finishes in finite time) to get reduced forms of the elem…
-
```
import gc
def test():
gc.collect()
sr = mq.SR(Integer(2),Integer(1),Integer(2),Integer(4),gf2=True,polybori=True)###line 25:_sage_ sage: sr = mq.SR(2,1,2,4,gf2=True,polybori=True)
gc.c…
-
Hello,
There is a problem with polybori in sage-5.0.beta11. It crashes with the following error message:
```
Traceback (most recent call last):
File "indexingError.py", line 13, in
B = I.gr…