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Jun 11, 2014 at 13:40 vote accept Andrea Pena
Jun 10, 2014 at 21:02 history edited Jim Humphreys CC BY-SA 3.0
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Jun 10, 2014 at 19:59 comment added Andrea Pena Thanks a lot. The reference you have given deals with group schemes, however I am just interested in group varieties, or algebraic groups. Instead of working with Hom$(H,-)$ (a representable functor from the category of $k$-algebras to sets) I would want to work with Hom$(H,k)$ (as in Sweedler's book). I know that $H$ needs to be finitely generated and reduced, but I not sure how to convert the results using the Hom$(A,-)$-definition to the Hom$(A,k)$-definition. I hope this makes some sense!
Jun 10, 2014 at 18:59 history answered Jim Humphreys CC BY-SA 3.0