±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 539  |  »Ø¸´: 2

²ÊºçW

Òø³æ (ÕýʽдÊÖ)

[ÇóÖú] ¹ØÓÚSchwarzian derivative Óë cross-ratio

ÉèSchwarzian derivativeΪs(f)£¬Ö¤Ã÷ÏÂʽ³ÉÁ¢£º
£¨f(z+ta),f(z+tb),f(z+tc),f(z+td)£©=(a,b,c,d)(1+t^2/6(a-b)(c-d)s(f))+O(t^3)
ÆäÖÐÈÎÒâËĸöÊýa,b,c,d£¬
£¨a,b,c,d£©=a-c/a-d:b-c/b-d (´«ËµÖеĽ»±Ècross-ratio)
  Âé·³¸÷λÁË¡£¡£¡£¡£¡£

[ ·¢×ÔÊÖ»ú°æ http://muchong.com/3g ]
»Ø¸´´ËÂ¥
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

11jxli1

½û³æ (ÖøÃûдÊÖ)

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
±¾ÌûÄÚÈݱ»ÆÁ±Î

2Â¥2013-01-09 16:54:57
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

²ÊºçW

Òø³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
2Â¥: Originally posted by 11jxli1 at 2013-01-09 16:54:57
È¡¶Ô³ÆÈ¥Ö¤Ã÷µÄ
Éè-a,-b ,-c ,-d´ø½øÈ¥

²»ºÃÒâ˼ »¹ÊDz»Ì«Ã÷°×........

[ ·¢×ÔÊÖ»ú°æ http://muchong.com/3g ]
3Â¥2013-01-09 17:01:16
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ ²ÊºçW µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] Ò»Ö¾Ô¸211ԺУ 344·Ö ¶«±±Å©Òµ´óѧÉúÎïѧѧ˶£¬Çóµ÷¼Á +4 ؼ·çѩҹ¹éÈËØ¼ 2026-03-26 5/250 2026-03-27 09:43 by ؼ·çѩҹ¹éÈËØ¼
[¿¼ÑÐ] 0856²ÄÁÏ»¯¹¤µ÷¼Á ×Ü·Ö330 +4 zhubinhao 2026-03-27 4/200 2026-03-27 09:38 by caszguilin
[˶²©¼ÒÔ°] ÕÐÊÕÉúÎïѧ/ϸ°ûÉúÎïѧµ÷¼Á +3 IceGuo 2026-03-26 4/200 2026-03-27 05:35 by user003
[¿¼ÑÐ] 349Çóµ÷¼Á +4 Àîľ×Ó°¡¹þ¹þ 2026-03-25 4/200 2026-03-26 22:49 by fmesaito
[¿¼ÑÐ] Ò»Ö¾Ô¸»ªÀí£¬ÊýÒ»Ó¢Ò»285ÇóAÇøµ÷¼Á +8 AZMK 2026-03-25 10/500 2026-03-26 22:37 by ѧԱ8dgXkO
[¿¼ÑÐ] 085701»·¾³¹¤³Ì£¬267Çóµ÷¼Á +4 minht 2026-03-26 4/200 2026-03-26 20:14 by barlinike
[¿¼ÑÐ] Çóµ÷¼Á +8 Auroracx 2026-03-22 8/400 2026-03-26 19:55 by ²»³Ôô~µÄ؈
[¿¼ÑÐ] ÉúÎïѧ 296 Çóµ÷¼Á +4 ¶ä¶ä- 2026-03-26 6/300 2026-03-26 19:01 by ²»³Ôô~µÄ؈
[¿¼ÑÐ] ѧ˶274Çóµ÷¼Á +3 LiÀîÓã 2026-03-26 3/150 2026-03-26 18:32 by Ìá³ö·½·¨µÄÌá³öº
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©»¯¹¤´óѧ²ÄÁÏÓ뻯¹¤£¨085600£©296Çóµ÷¼Á +9 µ¾ÆÞС±à 2026-03-26 9/450 2026-03-26 16:16 by ²»³Ôô~µÄ؈
[¿¼ÑÐ] ²ÄÁÏ¿ÆÑ§Ó빤³Ì 317Çóµ÷¼Á +4 JKSOIID 2026-03-26 4/200 2026-03-26 15:58 by ²»³Ôô~µÄ؈
[¿¼ÑÐ] 081700 µ÷¼Á 267·Ö +11 ÃÔÈ˵Ĺþ¹þ 2026-03-23 11/550 2026-03-26 15:41 by zzll406
[¿¼ÑÐ] 347Çóµ÷¼Á +4 L when 2026-03-25 4/200 2026-03-25 13:37 by cocolv
[¿¼ÑÐ] 282Çóµ÷¼Á +3 wcq131415 2026-03-24 3/150 2026-03-25 12:16 by userper
[¿¼ÑÐ] 307Çóµ÷¼Á +5 ³¬¼¶ÒÁ°º´óÍõ 2026-03-24 5/250 2026-03-24 15:46 by ÐÇ¿ÕÐÇÔÂ
[¿¼ÑÐ] 305·ÖÇóµ÷¼Á£¨Ê³Æ·¹¤³Ì£© +5 Sxy112 2026-03-21 7/350 2026-03-24 12:27 by 544594351
[¿¼ÑÐ] ²ÄÁÏ/ũҵרҵ£¬07/08¿ªÍ·¾ù¿É£¬¹ýÏß¾ÍÐÐ +3 ºÇßíŶ»í 2026-03-23 4/200 2026-03-23 22:30 by Íô£¡£¿£¡
[¿¼ÑÐ] 269Çóµ÷¼Á +4 ÎÒÏë¶ÁÑÐ11 2026-03-23 4/200 2026-03-23 21:25 by pswait
[¿¼ÑÐ] Çóµ÷¼Á +5 Zhangbod 2026-03-21 7/350 2026-03-22 13:13 by Zhangbod
[¿¼ÑÐ] Çóµ÷¼Á +3 eation27 2026-03-20 3/150 2026-03-20 19:32 by JourneyLucky
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û