[sage-devel] Re: Special values of a dirichlet L-series are needed to rescue the mass formula in sage

2018-10-03 Thread Simon Brandhorst
Just in case someone in the future wonders about similar things: As far as I can tell Hanke uses a different L series than Conway and Sloane. But he also uses a different definiton for the standard_p_mass. Both seem to replace the discrimiant by the fundamental discrimiant. I guess both changes ca

Re: [sage-devel] Re: sage -gdb questions

2018-10-03 Thread Erik Bray
On Wed, Oct 3, 2018 at 6:53 PM Dima Pasechnik wrote: > > On Wed, Oct 3, 2018 at 3:16 PM Dima Pasechnik wrote: > > > > 1) How does one suppress noisy messages about threads (coming from ipython, > > I suppose)? > > > > 2) How does one supress breaks coming from Python try/except blocks? > > OK, t

[sage-devel] Re: sage -gdb questions

2018-10-03 Thread Dima Pasechnik
On Wed, Oct 3, 2018 at 3:16 PM Dima Pasechnik wrote: > > 1) How does one suppress noisy messages about threads (coming from ipython, I > suppose)? > > 2) How does one supress breaks coming from Python try/except blocks? OK, these are easy: just added the following to ~/.gdbinit set print thread

[sage-devel] sage -gdb questions

2018-10-03 Thread Dima Pasechnik
1) How does one suppress noisy messages about threads (coming from ipython, I suppose)? 2) How does one supress breaks coming from Python try/except blocks? Thanks Dima -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this gro

[sage-devel] Re: Special values of a dirichlet L-series are needed to rescue the mass formula in sage

2018-10-03 Thread Simon Brandhorst
Apparently things are much simpler. It appears it is not a mathematical error, but rather a computational. Frederic Chapoton added a mass.canonicalize_radical() to deal with the symbolic part of the computation. I am now testing this against magma for a few thousand lattices of small determinan

Re: [sage-devel] Special values of a dirichlet L-series are needed to rescue the mass formula in sage

2018-10-03 Thread John Cremona
I forwarded this to sage-nt to increase that chances of a helpful response. John On Wed, 3 Oct 2018 at 12:26, Simon Brandhorst wrote: > The mass of a positive definite quadratic form is defined as the > sum over 1/#Aut(L') where L' runs over the representatives of the genus of > L. > > It can b

[sage-devel] Special values of a dirichlet L-series are needed to rescue the mass formula in sage

2018-10-03 Thread Simon Brandhorst
The mass of a positive definite quadratic form is defined as the sum over 1/#Aut(L') where L' runs over the representatives of the genus of L. It can be calculated by combining informations at the different completions of L at all primes by analytic methods. It is a particularly beautiful and