Sure! I'll do it.
El jueves, 5 de abril de 2018, 12:15:30 (UTC-3), David Loeffler escribió:
>
> Sounds reasonable to me. Can you open a trac ticket for this?
>
> On 28 March 2018 at 18:01, Nicolás Sirolli > wrote:
>
>> The Gauss sum for the Dirichlet character modulo 1 is equal to 1, but:
>>
>> sage: G = DirichletGroup(1)
>> sage: chi = G.list()[0]
>> sage: chi.gauss_sum()
>> 0
>>
>> The output is zero because the gauss_sum function in
>> modular/dirichlet.py, after some preliminaries, computes the following:
>>
>> for c in chi.values()[1:]:
>> z *= zeta
>> g += L(c)*z
>> return g
>>
>>
>> If chi.modulus() > 1, then chi.values()[0] equals 0, so it can be skipped
>> in the sum above. But in this case, it equals 1 and needs to be included in
>> the sum
>>
>> I'm using 8.2 beta 7.
>>
>> Best,
>> Nicolás.
>>
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