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Nov 4, 2018 at 19:26 comment added J. Darné Also, preserving the filtrations is more than just continuity (except for very special filtrations), and I think we really need to consider the whole filtration here.
Nov 4, 2018 at 19:23 comment added J. Darné I forgot this part in my question : thanks for your comment ! Note that continuity alone is not enough, because preservation of the Malcev operations does not come for free if the field of coeffs is larger than $\mathbb Q$ (look at the additive Malcev group $\mathbb k$). But maybe it is over $\mathbb Q$. Do you have a reference for that ?
Nov 4, 2018 at 19:20 history edited J. Darné CC BY-SA 4.0
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Nov 4, 2018 at 16:52 comment added Adrien Not sure it's what you're looking for, but Malcev groups are pro-unipotent groups, so they comes with a topology and I think maps coming from Hopf algebras are just those group morphisms which are continuous.
Nov 4, 2018 at 15:45 review First posts
Nov 4, 2018 at 16:11
Nov 4, 2018 at 15:40 history asked J. Darné CC BY-SA 4.0