送交者: xj 于 2005-10-02, 21:47:54:
回答: 镜老“可能”还是没有“读懂”老费，甚至没有“读懂”xj兄。 由 笑笑 于 2005-10-02, 21:41:13:
whenever I see a textbook labeled as advanced under, I usually turn away from it. Very often you will get confused what they try to say. They also tend to proof simple things (which you already know) but leave challenge ones as exercises or future references--which is the worst you can imagine. Who the heck has time to check the reference or figure out exercises?