Re: polred and variants

[Aurel Page <aurel.page@normalesup.org>]

Dear John,

On 23/01/2026 10:19, John Cremona wrote:

> I did also use it for HNF and SNF of integer
> matrices, but I no longer use that code since I use instead some gp
> functions from Aurel which use his new sparse SNF code.
> (Incidentally, is that yet in the main lari branch?  I am maintaining
> a separate version based on a branch called aurel-amt which I just saw
> is at a commit dated 19 July 2021. But I finished my computations with
> that branch a year ago anyway.)
>     
    It is not in master, but I started a discussion about it in the last
    Atelier, see "Sparse matrices in PARI/GP" in
    https://pari.math.u-bordeaux.fr/Events/PARI2026/
    It needs further work to be merged to master, but there seems to be
    some interest so I will try to find time to work on it.
    
    Best,
    Aurel