Geometry.Net - the online learning center
Home  - Scientists - Heawood Percy

e99.com Bookstore
  
Images 
Newsgroups
Page 5     81-83 of 83    Back | 1  | 2  | 3  | 4  | 5 
A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  

         Heawood Percy:     more detail
  1. Hochschullehrer (Durham): John Frederick Dewey, David Heywood Anderson, Fritz London, David M. Knight, Percy Heawood, William Young Sellar (German Edition)
  2. Vice-Chancellors and Wardens of Durham University: Kenneth Calman, Derman Christopherson, Percy John Heawood, Chris Higgins

81. ? ? ? 25/ ? 4
The summary for this Korean page contains characters that cannot be correctly displayed in this language/character set.
http://www.itbiz.co.kr/news/su/2000040101.htm

82. µå¸²À§Áî, ²ÞÀÌ ÀÌ·ç¾îÁö´Â ÀÎÅͳÝ
The summary for this Korean page contains characters that cannot be correctly displayed in this language/character set.
http://my.dreamwiz.com/piruks/mathhis/4color.htm
"URLÀ» Ç×»ó UTF-8À¸·Î º¸³¿"

83. 4»ö ¹®Á¦
The summary for this Korean page contains characters that cannot be correctly displayed in this language/character set.
http://mathman.pe.kr/math/color4.htm
  • - Keith DevlinÁöÀ½ / Çã¹Î.¿ÀÇý¿µ ¿Å±è. °æ¹®»ç.
1852³â 10¿ù, ¿µ±¹ ·±´ø¿¡ ÀÖ´Â À¯´Ï¹ö½Æ¼ ´ëÇÐ(University College)ÀÇ ´ëÇпø»ý ÇÁ·£½½º ±¸Æ®¸®¿¡(Francis Guthrie)´Â ¿µ±¹ Áöµµ¸¦ »öÄ¥ÇØ ³ª°¡´Ù°¡
±¸Æ®¸®¿¡´Â ·±´ø´ëÇÐÀÇ ÇлýÀ̾ú´ø ³²µ¿»ý ÇÁ·¹´õ¸¯ÇÑÅ× ¹°¾ú°í, ÇÁ·¹´õ¸¯Àº ´Ù½ ½º½ÂÀÎ ¸ð¸£°£(Augustus De Morgan)¿¡°Ô ¹°¾ú´Ù. ¸ð¸£°£Àº ¶Ç ¾ÆÀÏ·£µåÀÇ ¼öÇÐÀÚÀÌÀÚ À§´ëÇÑ ¹°¸®ÇÐÀÚ¿´´ø ÇعÐÅÏ(William Rowan Hamilton)¿¡°Ô ÆíÁö¸¦ ½è´Ù. ÇعÐÅϵµ ´Ù¼¸ Á¾·ùÀÇ »öÀÌ ÇÊ¿äÇÑ µµÇüÀ» £Áö ¸øÇßÀ¸¸ç, ±×·± µµÇüÀÌ Á¸ÀçÇÏÁö ¾Ê´Â´Ù´Â °ÍÀ» ¼öÇÐÀûÀ¸·Î Áõ¸íÇÒ ¼öµµ ¾ø¾ú´Ù.
±× µÚ ÀÌ ¹®Á¦´Â ºü¸¥ ¼Óµµ·Î À¯·´¿¡ ÀüÆÄµÇ¾î ¿©·¯ »ç¶÷µéÀÇ µµÀüÀ» ¹Þ¾ÒÁö¸¸, ³»·Î¶óÇÏ´Â ¼öÇÐÀڵ鵵 Áõ¸íÇÏÁö ¸øÇß°í, 1878³â ÄÉÀϸ®(F.Cayley)¿¡ ÀÇÇØ °ø½ÄÀûÀ¸·Î Á¦±âµÇ¾ú´Ù.
4»ö¹®Á¦(four color problem)·Î ºÒ¸®´Â ÀÌ ¹®Á¦´Â 1879³â ¿µ±¹ÀÇ ÄÍÆä(Alfred Bray Kempe)¿¡ ÀÇÇØ Ç®·È´Ù. ±×·¸°Ô ¾Ë°í ÀÖ¾ú´Ù.
±×·¯´Ù°¡ 1890³â, ´õ·³ ´ëÇÐÀÇ °­»ç¿´´ø Á¸ È÷¿ìµå(Percy John Heawood)´Â ÄÍÆä°¡ ÇØ°áÇÑ °ÍÀ¸·Î ¾Ë·ÁÁø ³í¹®¿¡¼­ ¿À·ù¸¦ ¹ß°ßÇß°í, À̸¦ ¼öÁ¤ÇÏ¿© ´Ù¼¸ Á¾·ùÀÇ »öÀ¸·Î´Â ¸ðµç Áöµµ¸¦ Ä¥ÇÒ ¼ö ÀÖ´Ù´Â °á·ÐÀ» ³»·È´Ù.
ÀÌ·± ¿¬±¸°úÁ¤¿¡¼­ À§»ó¼öÇÐ(topology)¶ó´Â »õ·Î¿î ºÐ¾ßÀÇ ¼öÇÐÀ» Å©°Ô ¹ßÀü½Ä×´Ù.

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  

Page 5     81-83 of 83    Back | 1  | 2  | 3  | 4  | 5 

free hit counter