On 08/18/2015 11:28 PM, Prof. Dr. Johannes Grabmeier FW wrote: > so let me add one first counterexample myself:
Perhaps not a real (counter-)example, but if we include near-rings, https://en.wikipedia.org/wiki/Near-ring then there are certainly cases that have non-abelian addition. An example is given on the above page. Ralf -- You received this message because you are subscribed to the Google Groups "FriCAS - computer algebra system" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/fricas-devel. For more options, visit https://groups.google.com/d/optout.
