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21 µØÅÒ¤Á 2005, 10:49
Çѹ¡è͹¼Áä»´Ù Olympiad Recommend Reading (http://www.unl.edu/amc/a-activities/a4-for-students/reading-list.html) ·ÕèàÇ红ͧ AMC(American Mathematics Competitions) ÁÒ¤ÃѺ ã¹Êèǹ¢Í§Ë¹Ñ§Ê×Í Combinatorics ¼ÁàËç¹Ë¹Ñ§Ê×ÍÍÂÙèàÅèÁ¹Ö§ à»ç¹Ë¹Ñ§Ê×Íà¡ÕèÂǡѺ Generatingfunction ª×èÍàÃ×èͧ Generatingfunctionology «Ö觼Á¡ÓÅѧÈÖ¡ÉÒàÃ×èͧ¹ÕéÍÂÙè¾Í´Õ ¡çàÅÂʹ㨠áµè¨Ðä»ËÒ«×éÍ¡çãªè·Õ ¡çàÅ Search ËÒ·Õè Google «ÐàÅÂ(Search ¤ÓÇèÒ Generatingfunctionology) áÅéǼÁ¡ç¤ÅÔ¡à¢éÒä»·ÕèÅÔ§¤ìáá ÊèǹËÑǢͧàÇ纡ç¢Öé¹ÁÒàÅÂÇèÒ DOWNLOAD THE BOOK "generatingfunctionology" §èÒ´ÒÂÍÐäÃÍÂèÒ§¹Õé ˹ѧÊ×ÍàÅèÁÍ×è¹·Õè¼ÁËÒÁѹäÁè¢Öé¹àÇçºáá·ÕèãËé´ÒǹìâËÅ´ËÃÍ¡¹Ð ÁÕáµè¾Ç¡ Amazon ¨Í§ Google ˹éÒááä»àÃÕ¹ÃéÍ àÊÃç¨áÅéǼÁ¡ç´ÙÇèÒã¤Ã˹ͷÕè㨺ØàÍÒ˹ѧÊ×ÍÁÒ»ÅèÍ ¼Á´Ù·Õè·éÒÂàÇ纡ç»ÃÒ¡¯ÇèÒà»ç¹ H. Wilf ¼Ùéáµè§¹Ñè¹àͧ!
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Link âËŴ˹ѧÊ×ͤÃѺ (http://www.math.upenn.edu/~wilf/DownldGF.html)