Thank you Frédéric. I wasn't aware of that package. It seems quite 
interesting.

On Thursday, September 8, 2016 at 5:08:32 PM UTC+2, Frédéric Chapoton wrote:
>
> Maybe the authors/users of the Chow package for sage would be interested ? 
> Probably not Sorger, who is busy being currently head of mathematics in 
> CNRS.
>
> http://www.math.sciences.univ-nantes.fr/~sorger/chow_en.html
>
> Frederic
>
> Le jeudi 8 septembre 2016 16:00:37 UTC+2, Simon Brandhorst a écrit :
>>
>> Ursula Whitcher and I are planning to apply to hold a weekend workshop
>> at BIRS next March.
>> The idea is to do SageMath development related to K3 surfaces and 
>> irreducible holomorphic symplectic manifolds (IHSMs/Hyperkähler).
>> Their geometry is accessible through their second integral cohomology group 
>> which is an indefinite lattice. 
>>
>> Our (possible) goals are to implement SageMath functionality for
>> - indefinite lattices,
>> - isometries,
>> - modeling Hodge structures/Hodge isometries,
>> - elliptic fibrations on K3 surfaces,
>> - point counting.
>>
>> Ideally the date is March 11-12.
>>
>> If you are interested in attending, please let us know.
>>
>> Best
>> --Simon
>>
>>

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