Hi Andrew!
On Sep 2, 6:56 pm, andrew ewart aewartma...@googlemail.com wrote:
...
degx= f.degree(z1)
degy= f.degree(z2)
degree=2*degx*degy
...
for q in xrange(0,degree+1):
for ja in range(0,degx):
want i want to compute is a vector for each power of ad^j that lists all the
coefficients wrt t and y which will have length at most (degree+1)*degx
of course if it is shorter i want to stick 0's on the end until i get to
this length
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so for ad^0 i should get out
[1,0,0,0,0,...,0]
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Hi Andrew!
On Sep 3, 12:28 pm, andrew ewart aewartma...@googlemail.com wrote:
so for ad^0 i should get out
[1,0,0,0,0,...,0]
What you can use is padded_list!
Example:
sage: R.x=QQ[]
sage: p = R.random_element()
sage: p
3/4*x^2 + 1/2*x - 1
sage: p.padded_list(5)
[-1, 1/2, 3/4, 0, 0]
The
finally getting somewhere
now get this output
[1, 0, 0, 0, 0, 0, 0, 0, 0]
[1, 0]
[0, 0]
[0, 0]
[0, 0]
[0, 0]
[0, 0]
[0, 0]
[0, 0]
[0, 0]
[t, 0, t, 0, 2*t, 0, 3*t, 0, 0]
[0, 1]
[0, 0]
[0, 1]
[0, 0]
[0, 2]
[0, 0]
[0, 3]
[0, 0]
[0, 0]
this is very close all i want to do is now join each collection
On Sep 3, 1:42 pm, andrew ewart aewartma...@googlemail.com wrote:
...
this is very close all i want to do is now join each collection of lists
together
so get outputs
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
and
[0, 1, 0, 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0, 0]
thoughts?
Its a little unclear what you want to consider the variables to be.
Why would the coefficient list have 6 items? Perhaps you want
something like this:
var('a,b,c,d,e,f,x')
l=[a+b*x+c*x^2, d+e*x+f*x^2
for s in range(0,2):
cofs = [l[s].coefficient(q) for q in [a,b,c,d,e,f]]
print cofs
the variable is x in this case
also im running this out of sage in a file, then loading the file in sage so
i dont to use var(...)
also i feel ill need 2 loops
1 to go through each component on the list
and a second to extract the coefficints of each component wrt 1,x and x^2
(in this case)
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and the final printout should be (in this case)
[a,b,c,d,e,f]
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Hi Andrew!
On 2 Sep., 18:12, andrew ewart aewartma...@googlemail.com wrote:
suppose i have a list of the form
l=[a+b*x+c*x^2, d+e*x+f*x^2]
how do i use l[n].list() correctly to produce
[a,b,c,d,e,f]
as at the moment im only getting
[a,b,c] ...
Please provide a complete code snipped. From
well i was trying to use that example to see how i could work it in this
case
S = GF(5)
R.z1, z2=PolynomialRing(S, 2, z);
f = z2^2+z1^2+3
T.x=PolynomialRing(S)
def factor_bivar(f):
q = S.cardinality()
fx0 = T(f(x,0))
fac = fx0.factor()
l =
well i was trying to use that example to see how i could work it in this
case
S = GF(5)
R.z1, z2=PolynomialRing(S, 2, z);
f = z2^2+z1^2+3
T.x=PolynomialRing(S)
def factor_bivar(f):
q = S.cardinality()
fx0 = T(f(x,0))
fac = fx0.factor()
well i was trying to use that example to see how i could work it in this
case
S = GF(5)
R.z1, z2=PolynomialRing(S, 2, z);
f = z2^2+z1^2+3
T.x=PolynomialRing(S)
def factor_bivar(f):
q = S.cardinality()
fx0 = T(f(x,0))
fac = fx0.factor()
Does this help?
sage: x=polygen(QQ)
sage: L = [1+2*x+3*x^2,4+5*x+6*x^2]
sage: sum([list(f) for f in L],[])
[1, 2, 3, 4, 5, 6]
If f is a univariate polynomial then list(f) is a list of its
coefficients, with the i'th entry equal to the coefficient of x^i.
And summing lists concatenates them.
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