On Mon, Sep 28, 2015 at 10:46:26AM +0200, Nathann Cohen wrote: > > Just in case, note that for multiplication in rings, you can already do: > > > > sage: IntegerModRing(10).unit_group().cayley_graph() > > Whaaaaaat? Unit group? Is that standard terminology? What's wrong with > `.additive_group()` ? I couldn't have guessed that.
The multiplication law in a ring is never a group law sice zero is not invertible, so, for multiplication we have to select the invertible elements, those form the unig group. Ciao, Thierry -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
