送交者: 老椰子 于 July 29, 2009 13:48:26:
回答: 老椰子兄,search了一下 由 草绿 于 July 29, 2009 13:03:51:
The description in my post 178787 was focusing on the color hair problem. It tried to formally express the conditions of the existence of the N under the particular circumstances.
The description of Generalized Pigeonhole Principle referred in your post is clear and the proof of it you provided is sufficient.
Thanks.