Skip to main content
3 events
when toggle format what by license comment
Oct 28, 2011 at 3:36 comment added Liu Hang Thanks! I think it is better if Rosenberg explains what he had in mind in the textbook.
Oct 28, 2011 at 3:27 vote accept Liu Hang
Oct 28, 2011 at 2:17 history answered Ralph CC BY-SA 3.0