Miguel, Having read #8974 carefully, I could see the default for endomorphisms going either way. My main concern is that matrices follow practice and default to providing eigenvalues (and eigenvectors) outside the base field. Endomorphisms could default to behave identically to matrices, or they could respect the notion of being functions and only return "proper" elements of the domain and range, as you have argued in regards to your own teaching. But with options available for matrices and endomorphisms, individual opinions/tastes can be accomodated.
Thanks for bringing the discussion to sage-devel. Rob -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
