 :::::We need to preserve attribution when moving text. I took a look at the history of Nondeterministic finite automaton and see that the text evolved. It seems to date to May 19, 2007, in edits by User:Linas:. If the text is just removed from the other article and pasted here, it looks like your original work, and he doesn't get credit. Certainly there is a way to properly split articles (other than simple cut and paste), and it likely requires a dummy edit in both the sending and receiving articles, as well as perhaps a template on the two talk pages. I will look for the details.   