| ²é¿´: 785 | »Ø¸´: 6 | |||
| µ±Ç°Ö÷ÌâÒѾ´æµµ¡£ | |||
hxsjcгæ (³õÈëÎÄ̳)
|
[½»Á÷]
ÇóÖúÇòµÄÌî³äÂÊ
|
||
| ÇóÖúÓÐʲô·½·¨¿ÉÒÔÄ£Äâ¼ÆËã³öÒ»¸ö´óµÄÈÝÌåÖÐСµÄÇòÐÎ΢Á£µÄÌî³ä¶È¡£ÈÝÌå¿ÉÒÔΪÁ¢·½Ì壬ԲÖùÌåµÈ²»Í¬³ß´ç²»Í¬ÐÎ×´£¬Î¢Á£ÎªÇòÐΣ¬µ«ÊÇÇòÖ±¾¶¿ÉÒԱ仯£¬Ò²¿ÉÒÔÑ¡Ôñ²»Í¬Ö±¾¶µÄ¶àÖÖÇò½øÐлìºÏ¡£ |
» ²ÂÄãϲ»¶
805600ר˶²ÄÁÏÓ뻯¹¤348·ÖÇóµ÷¼Á
ÒѾÓÐ6È˻ظ´
ÖØÇì´óѧ²ÄÁÏÓ뻯¹¤085600£¬³õÊÔ370+£¬ÇóÇóµ÷¼Á½¨Òé
ÒѾÓÐ5È˻ظ´
309Çóµ÷¼Á
ÒѾÓÐ3È˻ظ´
Ò»Ö¾Ô¸±±½»´ó²ÄÁϹ¤³Ì£¬×Ü·Ö358
ÒѾÓÐ4È˻ظ´
302Çóµ÷¼ÁÒ»Ö¾Ô¸±±º½070300£¬±¾¿ÆÖ£´ó»¯Ñ§
ÒѾÓÐ11È˻ظ´
»¯Ñ§¹¤³Ìר˶324·Ö£¬Ò»Ö¾Ô¸Öйú¿óÒµ´óѧÇóµ÷¼Á
ÒѾÓÐ7È˻ظ´
²ÄÁÏÇóµ÷¼Á
ÒѾÓÐ11È˻ظ´
¡¾Çóµ÷¼Á¡¿ÐÂÄÜÔ´²ÄÁϱ¾¿Æ£¬Ò»Ö¾Ô¸211£¬³õÊÔ321
ÒѾÓÐ4È˻ظ´
336Çóµ÷¼Á
ÒѾÓÐ5È˻ظ´
²ÄÁÏÇóµ÷¼Á
ÒѾÓÐ8È˻ظ´
bluesine
Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)
¿ÆÔ·Ð¡Ä¾³æ
- ÊýѧEPI: 5
- Ó¦Öú: 132 (¸ßÖÐÉú)
- ¹ó±ö: 1.991
- ½ð±Ò: 9858.9
- É¢½ð: 89
- ºì»¨: 19
- Ìû×Ó: 3624
- ÔÚÏß: 377.6Сʱ
- ³æºÅ: 869544
- ×¢²á: 2009-10-12
- ÐÔ±ð: GG
- רҵ: ÊýѧÎïÀí
¡ï ¡ï
Сľ³æ(½ð±Ò+0.5):¹§Ï²ÇÀɳ·¢£¬¸ø¸öºì°ü
haixing2008(½ð±Ò+1,VIP+0):¶àл½»Á÷£¡£¡~ 1-9 16:01
Сľ³æ(½ð±Ò+0.5):¹§Ï²ÇÀɳ·¢£¬¸ø¸öºì°ü
haixing2008(½ð±Ò+1,VIP+0):¶àл½»Á÷£¡£¡~ 1-9 16:01
|
Õâ¸öÓеãÄѶȰ¡£¬ºÇºÇ¡£ ½¨ÒéÂ¥Ö÷ÏÈÄüòµ¥µÄŪ£¬±ÈÈçÏȼÆËãÔÚËùÓÐСÇòÖ±¾¶¶¼Ò»ÑùµÄÇé¿ö£¬ÔÚÁ¢·½Ì壬ԲÖùÌåµÈ²»Í¬³ß´ç²»Í¬ÐÎ×´ÖеÄÌî³äÂÊ¡£°ÑÕâ¸öÎÊÌâ½â¾öÁËÔÚ½â¾öÄãÕâ¸öÎÊÌ⣬ֱ½ÓÀ´ºÃ¼¬Êָоõ |

2Â¥2010-01-05 21:42:28
attractor
Ìú¸Ëľ³æ (ÖøÃûдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 7263.9
- ºì»¨: 3
- Ìû×Ó: 1143
- ÔÚÏß: 620Сʱ
- ³æºÅ: 495210
- ×¢²á: 2008-01-14
- ÐÔ±ð: GG
- רҵ: »ù´¡ÎïÀíѧ
¡ï ¡ï
Сľ³æ(½ð±Ò+0.2):ÇÀÁ˸öС°åµÊ£¬¸ø¸öºì°ü
bluesine(½ð±Ò+1,VIP+0):Ŷ£¿¡°Óиö¿ªÆÕÀÕ²ÂÏëµ½ÏÖÔÚҲû½â¾ö¡±Ô¸ÎÅÆäÏê 1-7 14:41
Сľ³æ(½ð±Ò+0.2):ÇÀÁ˸öС°åµÊ£¬¸ø¸öºì°ü
bluesine(½ð±Ò+1,VIP+0):Ŷ£¿¡°Óиö¿ªÆÕÀÕ²ÂÏëµ½ÏÖÔÚҲû½â¾ö¡±Ô¸ÎÅÆäÏê 1-7 14:41
|
Õâ¿ÉÊǸöÄÑÌ⣬Óиö¿ªÆÕÀÕ²ÂÏëµ½ÏÖÔÚҲû½â¾ö¡£ Èç¹ûÔÚÈÝÆ÷ÖÐÌî×°£¬»¹ÓëÌî×°µÄÎïÀí¹ý³ÌÓйء£ |

3Â¥2010-01-06 19:44:48
wuguocheng
ÈÙÓþ°æÖ÷ (Ö°Òµ×÷¼Ò)
- Ó¦Öú: 2 (Ó×¶ùÔ°)
- ¹ó±ö: 7.049
- ½ð±Ò: 3674.1
- É¢½ð: 316
- ºì»¨: 22
- ɳ·¢: 1
- Ìû×Ó: 3032
- ÔÚÏß: 352.5Сʱ
- ³æºÅ: 623107
- ×¢²á: 2008-10-11
- ÐÔ±ð: GG
- רҵ: Á¦Ñ§ÖеĻù±¾ÎÊÌâºÍ·½·¨
- ¹ÜϽ: ÍÁľ½¨Öþ

4Â¥2010-01-07 13:46:32
attractor
Ìú¸Ëľ³æ (ÖøÃûдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 7263.9
- ºì»¨: 3
- Ìû×Ó: 1143
- ÔÚÏß: 620Сʱ
- ³æºÅ: 495210
- ×¢²á: 2008-01-14
- ÐÔ±ð: GG
- רҵ: »ù´¡ÎïÀíѧ
¡ï ¡ï ¡ï
bluesine(½ð±Ò+3,VIP+0):лл£¬ÓÖ³¤¼ûʶÁË£¬ºÙºÙ 1-7 22:09
bluesine(½ð±Ò+3,VIP+0):лл£¬ÓÖ³¤¼ûʶÁË£¬ºÙºÙ 1-7 22:09
|
Hilbert¡¯s 18th problem In 1900, David Hilbert presented to the International Mathematical Congress in Paris a list of 23 problems which he hoped would guide mathematical research in the twentieth century. The 18th problem was concerned with sphere packing and space-filling polyhedra. "I point out the following question (. . .) important to number theory and perhaps sometimes useful to physics and chemistry: How one can arrange most densely in space an infinite number of equal solids of given form, e.g., spheres with given radii or regular tetrahedra with given edges (or in prescribed positions), that is, how can one so fit them together that the ratio of the filled to the unfilled space may be as great as possible?" Õâ¸öÎÊÌâͨ³£½ÐKepler Conjecture¡£¾Ý˵×îÔçÊÇÒ»¸öº£µÁÌá³öÀ´µÄ£¬ËûÏëÖªµÀÄÜ·ñ²âÁ¿Ò»Ï¼װåÉÏÅÚµ¯£¨Ô²ÇòµÄ£©¶ÑµÄ´óС£¬¾ÍÖªµÀÂòÀ´Á˶àÉÙÅÚµ¯¡£ºóÀ´ÑÝ»¯³ÉÒ»¸öÊýѧÄÑÌâ¡£KeplerÍÆ¶Ï£¨1611Äê£©ÍÆ¶Ï×îÃܵĶѻý·½Ê½ÊÇÃæÐÄÁ¢·½£¨fcc£©£¬¶Ñ»ýÂÊΪ0.7404 . . . £¬µ«Ã»ÓÐÖ¤Ã÷¡£¾Ý˵ºóÀ´Óиö»ªÈ˸ø³öÁËÖ¤Ã÷£¬µ«ºÜ¿ì±»ÈËÕÒ³öÁË©¶´¡£ ×î½üÔÚ¿´¡¶The pursuit of perfect packing¡·Õâ±¾Ê飬ÀïÃæ¸ÕºÃÓÐÏà¹Ø½éÉÜ£¬ºÜ¿ÆÆÕ£¬ºÜÓÐȤ¡£ [ Last edited by attractor on 2010-1-7 at 22:11 ] |

5Â¥2010-01-07 22:07:09
xiaohuang83
ľ³æ (ÕýʽдÊÖ)
- Ó¦Öú: 3 (Ó×¶ùÔ°)
- ½ð±Ò: 1783.5
- É¢½ð: 5
- ºì»¨: 1
- ɳ·¢: 1
- Ìû×Ó: 449
- ÔÚÏß: 147.5Сʱ
- ³æºÅ: 963099
- ×¢²á: 2010-03-06
- ÐÔ±ð: GG
- רҵ: ¼ÆËãÊýѧÓë¿ÆÑ§¹¤³Ì¼ÆËã

6Â¥2010-03-11 20:47:56
cpeng001
½ð³æ (СÓÐÃûÆø)
- ÊýѧEPI: 1
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 1481.3
- Ìû×Ó: 170
- ÔÚÏß: 79.2Сʱ
- ³æºÅ: 853731
- ×¢²á: 2009-09-22
- רҵ: ·ºº¯·ÖÎö
¡ï
javeey(½ð±Ò+1):¶àл½»Á÷£¡»¶Ó³£À´:) 2010-03-14 17:38
javeey(½ð±Ò+1):¶àл½»Á÷£¡»¶Ó³£À´:) 2010-03-14 17:38
| NatureÉÏÓÐÆªÎÄÕ£¬¾Ý˵½â¾öÁË´ËÎÊÌ⣬ÁíÍ⣬ ½üÄêAnn MathÒ²ÓÐÏà¹ØµÄ½á¹û |
7Â¥2010-03-12 08:38:59














»Ø¸´´ËÂ¥