On Tuesday, 11 September 2012 20:16:37 UTC+8, Volker Braun wrote:
>
> But I need the classical invariants / covariants with their conventional 
> names and normalizations in the literature. 


I don't think that 98% of Grace and Young 
(http://archive.org/details/algebraofinvaria00graciala) belong to core 
Sage. I'd say it might be an optional package.
I don't mind discriminants and other bits of the classical invariant theory 
which went on to live their lives in the modern maths, but, say, 
catalecticants, minimal systems of invariants for 5-ics, etc, please, give 
me a break...
 

> I'm not trying to do the most general SL(n,C) representation theory here.
>
> On Tuesday, September 11, 2012 1:12:57 PM UTC+1, Dima Pasechnik wrote:
>>
>> Yes, it's great, but I would rather like to see it packaged as invariants 
>> of a representation of SL(2,C), not
>> as invariants of a binary form. 
>>
>

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