Hi Oliver,
On 30 Jan., 01:04, Oliver Block wrote:
> Hello,
>
> I would like to define a function d from polynomial ring to itself (in
> the easiest case) that is linear over the base ring
That's to say: You don't simply want a function, but you want a
morphism of modules over the base ring, isn'
I wrote up a trac ticket and made a patch:
http://trac.sagemath.org/sage_trac/ticket/12385
With my patch, your code snippets evaluate as follows:
sage: Q = DiGraph({1: {2:'a'}, 2: {1: 'b', 3: 'c'}, 3: {2: 'd'}})
sage: Q.all_simple_paths([1], [2])
[[1, 2]]
sage: Q.all_simple_paths([2], [1])
[[2
What I understand from that sentence in the documentation is that if the
starting set and ending set share some vertex, you may get cycles in the
output, and each cycles will have the same point at its beginning as at its
end - specifically, a point which is in both the starting set and the
end
Hello,
I would like to define a function d from polynomial ring to itself (in
the easiest case) that is linear over the base ring and fulfills the
Leibniz rule, i.e. for all p,q in the Polynomial ring I want that d(p*q)
= d(p)*q + p*d(q). I would like to do this by specifying the image of
the gene
Thanks, Jason.
'Twould be nice to have folders.
What sort of coding is involved?
We have lots of master's students that need final projects for their
degrees.
Perhaps I can pass something on the the CS department.
Mike
On Jan 26, 4:40 am, Jason Grout wrote:
> On 1/25/12 11:16 PM, Mike OS wrote:
On Jan 27, 1:24 pm, Jori Mantysalo wrote:
> These work:
>
> SymmetricGroup(2).cayley_table()
> KleinFourGroup().cayley_table()
>
> This does not:
>
> SymmetricGroup(2).direct_product(SymmetricGroup(2)).cayley_table()
>
> There must be manual or FAQ about group presentation formats or something l
On Saturday 28 January 2012, Benjamin Howard wrote:
> Hi --
>
> I have an application in mind where I desperately
> need a faster implementation of the matrix methods:
>
> matrix_from_columns
> matrix_from_rows_and_columns
> matrix_from_rows
>
> I am aware that these will not be as fast as the s
On Friday, January 27, 2012, Fredrik wrote:
> I'm trying to use Macaulay2 through Sage. However, I get an error
> message. Here's what I type in Sage (notebook interface):
>
> "
> m = macaulay2
> m.eval('2+4')
> "
>
> I get the error message
>
> "
> Traceback (click to the left of this block for t
On Fri, Jan 27, 2012 at 4:24 PM, Jori Mantysalo wrote:
> These work:
>
> SymmetricGroup(2).cayley_table()
> KleinFourGroup().cayley_table()
>
> This does not:
>
> SymmetricGroup(2).direct_product(SymmetricGroup(2)).cayley_table()
SymmetricGroup(2).direct_product(SymmetricGroup(2), False).cayley_t
Thanks! Both of these tips are very important to me so extra thanks.
Linda
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These work:
SymmetricGroup(2).cayley_table()
KleinFourGroup().cayley_table()
This does not:
SymmetricGroup(2).direct_product(SymmetricGroup(2)).cayley_table()
There must be manual or FAQ about group presentation formats or something like
it somewhere -- but where?
--
Jori Mäntysalo
--
To p
I'm trying to use Macaulay2 through Sage. However, I get an error
message. Here's what I type in Sage (notebook interface):
"
m = macaulay2
m.eval('2+4')
"
I get the error message
"
Traceback (click to the left of this block for traceback)
...
RuntimeError: Unable to start macaulay2 because the
Hi --
I have an application in mind where I desperately
need a faster implementation of the matrix methods:
matrix_from_columns
matrix_from_rows_and_columns
matrix_from_rows
I am aware that these will not be as fast as the submatrix method (for
contiguous
submatrices) but the above three methods
On Jan 28, 6:26 pm, Jason Grout wrote:
> I should note that the sliders on aleph.sagenb.org allow you to click on
> the value and change the number manually, rather than moving the slider.
This is interesting, Jason, it is a useful features, apart the
constraints. Can I ask if the new framework
On Jan 28, 6:10 pm, Marshall Hampton wrote:
> Sounds like Jason has a good solution for you eventually. There are
> some cruder ways to work around this in the meantime:
>
> 1) Customize the values in the slider so they are all "nice".
> 2) Have a coarse- and fine-tuning slider. The final value
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