On 1/4/12 10:53 PM, kcrisman wrote:
On Jan 4, 9:04 pm, Felix Breuer wrote:
I'd be happy to do some more work on it. I would need some pointers,
though, on what still needs to be done. I can write up some documentation
next week.
Cheers,
Felix
PS: I am at the Joint Meetings right now. Are yo
On Jan 4, 9:04 pm, Felix Breuer wrote:
> I'd be happy to do some more work on it. I would need some pointers,
> though, on what still needs to be done. I can write up some documentation
> next week.
>
> Cheers,
> Felix
>
> PS: I am at the Joint Meetings right now. Are you at JMM? Or are there an
I'd be happy to do some more work on it. I would need some pointers,
though, on what still needs to be done. I can write up some documentation
next week.
Cheers,
Felix
PS: I am at the Joint Meetings right now. Are you at JMM? Or are there any
Sage-related events at JMM?
--
To post to this gr
On Monday, December 5, 2011 6:07:56 PM UTC-8, Felix Breuer wrote:
>
> Here is a first implementation of the cup product.
[snip]
> If there is interest, I would be willing to put in the additional work to
> add this function to Sage. But for that I would need to learn about the all
> the ot
Here is a first implementation of the cup product. I hope (of course) that
the code is correct, but it is certainly not very idomatic. Any suggestions
for improvement are welcome!
def cup_product(X,c1,dim1,c2,dim2):
d = dim1 + dim2
faces1 = list(X.n_faces(dim1))
faces2 = list(X.n_fa
On Sunday, December 4, 2011 7:47:13 PM UTC-8, Felix Breuer wrote:
>
> Hello again!
>
> I have followed your instructions and come up with the following:
>
> X = simplicial_complexes.Torus()
> C = X.chain_complex(cochain=True)
> print C._chomp_repr_()
> H = C.homology(generators=True)
> gen1 = H[1
Hello again!
I have followed your instructions and come up with the following:
X = simplicial_complexes.Torus()
C = X.chain_complex(cochain=True)
print C._chomp_repr_()
H = C.homology(generators=True)
gen1 = H[1][1][0]
gen2 = H[1][1][1]
d1 = C.differential()[1]
This works very well so far. In pa
Hi John!
Thanks for your detailed answer! I will try to figure this out and get back
to you!
Felix
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On Saturday, December 3, 2011 6:15:03 PM UTC-8, Felix Breuer wrote:
>
> Hello everyone!
>
> I would like to compute the cup-product of two chains in the cohomology of
> a simplicial complex.
>
Me too.
>
> What I have so far, is that I have the simplicial complex realized as a
> SimplicialCo
