On Tuesday, April 16, 2019 at 8:35:27 PM UTC-7, John H Palmieri wrote:
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> I think it's any sparse matrix, not just sparse matrices over SR.
>
> sage: m = matrix(3, [1, 0, 0, 0, 2, 0, 0, 0, 3], sparse=True)
> sage: exp(m) # hits the bug
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> Indeed. That's because m.exp() first changes the ring
On Tuesday, April 16, 2019 at 8:30:13 PM UTC-7, Nils Bruin wrote:
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> On Tuesday, April 16, 2019 at 8:06:06 PM UTC-7, Brian Fitzpatrick wrote:
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>>
>> Is this a bug?
>>
>> Looks like it. The problem seems to be that "sparse matrices over SR"
> aren't special cased the way dense matrices are
On Tuesday, April 16, 2019 at 8:06:06 PM UTC-7, Brian Fitzpatrick wrote:
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>
> Is this a bug?
>
> Looks like it. The problem seems to be that "sparse matrices over SR"
aren't special cased the way dense matrices are (and a diagonal matrix is
constructed as sparse:
sage: D=diagonal_matrix([1, 2,
