The point is not that it is trivial, but that the system is set up so you can do it. This describes why that is important: http:/www.ams.org/notices/200710/tx0

The point is not that it is trivial, but that the system is set up so you can do it. This describes why that is important: http:/www.ams.org/notices/200710/tx071001279p.pdf.