Neda's profile - activity

Hello

in many question that I asked before the answer was I should import sage: from sage.rings.polynomial.toy_buchberger import spol /.. I want to know how should I import these? I wrote these commands in sage but I've got error, so how should I use these import things?

Thank you

hello Could you please tell me how can I compute intersect of two or more Ideals? Thank you

Hello,

Could you please tell me how can I solve a trigonometric parametrization, for example

using a trigonometric identity to show that x= cos(t) y= cos(2t)

parametrizes a portion of a parabola so indicate what portion of the parabola is coverd..

thank you

Hello I want to sketch this affine variety in $R^3$: $V((x-2)(x^2-1) , y(x^2-y),(z+1)(x^2-1))$. Is this command

implicit_plot3d((x-2)(x^2-1) , y(x^2-y),(z+1)(x^2-1),[-2,2],[-2,2],[-2,2])

correct ? or I should try writing that command 3 times for each part?

Hello could you please tell me how can I compute the remainder on division of the given polynomial f by the order set F using grlex order in sage? thank you

f= x*y^2+x^3*y^2-y+1
F=(x*y^2-x , x-y^3)

Hi,

I wrote these commands in sage to have Euclidean algorithm but I only get an error.. what is the problem of this algorithm?

r=a%b
print (a,b,r)
while r != 0:
    a=b; b=r
    r=a%b
    print (a,b,r)

by the way how can I create a file named euclid.sage and save the above command in it?

Hi! Do you know in a given polynomial with a term order like grevlex, how can I distinct $y>z>x$ insted of $x>y>z$ in sage?

should I introduce affine space then use v.rational_points( bound=..) ?

Hello

could you please tell me how can I write twisted cubic

( {cost,sint | t in R}= v(x^2+y^2-1) )

in sage? should I use subscheme command and introduce it as an affine variety?

It means that you just have to copy the given line:

from sage.rings.polynomial.toy_buchberger import spol

in the Sage command line or in the notebook, and then the spol() function becomes available for the rest of your computation. The fact that not everything is imported by default to save memory and to accelerate startup.

If you get an error after typing such a line, then there is a problem with your Sage installation, please report it by giving an example of what you typed, your Sage version, which binary you downloaded, which machine and OS you used.