Le jeudi 5 février 2015 17:01:20 UTC+1, Jeroen Demeyer a écrit : > > On 2015-02-05 16:13, Eric Gourgoulhon wrote: > > What about isomorphisms ? Shall one use a cached is_isomorphism and > > implement an __invert__() method for all elements, raising an error if > > is_isomorphism is False ? > If it's not an isomorphism, I expect the computation of the inverse to > fail somewhere.
Indeed ! > Just handle that exception... > > OK, thanks. Eric. -- 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.
