±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 628  |  »Ø¸´: 3

shumolynu

½ð³æ (ÕýʽдÊÖ)

[ÇóÖú] Çó·­ÒëÒ»¸ö¾ä×Ó

ÉèUÊÇÒ»¸ö·Ç¿Õ¼¯ºÏ£¬RÊÇ µÄ¶þÔª¹ØÏµ£¬TÊÇUÉϵÄÒ»¸öÍØÆË£¬
ÓÉÒ»¸öR¿ÉÒÔ¶ÔÓ¦Ò»ÍØÆËT(R)£¬³ÆÎªÓÉRÉú³ÉµÄÍØÆË¡£Í¬ÑùµØ£¬Ò»¸öÍØÆËTÒ²¶ÔÓ¦Ò»¸ö¶þÔª¹ØÏµR(T)£¬³ÆÎªÓÉÍØÆËTÉú³ÉµÄ¶þÔª¹ØÏµ¡£ÔòR(T(R))¾ÍÊÇÓÉRÉú³ÉÍØÆËÖ®ºóÔÙÉú³ÉµÄ¶þÔª¹ØÏµ£¬T(R(T))ÊÇÓÉÍØÆËTÉú³É¶þÔª¹ØÏµÖ®ºóÔÙÉú³ÉµÄÍØÆË¡£

ÄÇôÎÊÌâÊÇ£ºR(T(R))ºÍT(R(T))·­Òë³ÉÓ¢ÓïÔõô·­Ò룬²»ÄܳöÏÖÊýѧ·ûºÅ£¬Ö»ÄÜÓÃÓ¢Óïµ¥´Ê±í´ï¡£
²»Ê¤¸Ð¼¤£¡
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

haixing2008

ÈÙÓþ°æÖ÷ (ÎÄ̳¾«Ó¢)

ÖÁÉÙÏÈ·­ÒëÒ»¸ö³õ¸å°É
ƽƽµ­µ­²ÅÊÇÕæ£¡
2Â¥2012-07-25 16:32:42
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

shumolynu

½ð³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
2Â¥: Originally posted by haixing2008 at 2012-07-25 16:32:42
ÖÁÉÙÏÈ·­ÒëÒ»¸ö³õ¸å°É

R(T(R))=R ÕâÑù·­Òë¿ÉÒÔÂð£¿
The binary relation induced by the topology which is induced by a relation is exactly the original binary relation.
ÓÐÄÄЩ²»¶Ô£¬¾´ÇëÖ¸Õý£¡
3Â¥2012-07-26 11:23:23
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

kechengsong

½ð³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

Ì«ÄÑ£¬²»¸Ò¿´£¡

ÕæÐıíʾÅå·þ£¡
ÖªÈËÕßÖÇ£¬×ÔÖªÕßÃ÷¡£
4Â¥2012-08-02 12:06:12
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ shumolynu µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤371Çóµ÷¼Á +14 ÅãÁÕ¿´º£ 2026-04-04 15/750 2026-04-06 06:59 by houyaoxu
[¿¼ÑÐ] 316Çóµ÷¼Á +5 yyxÏëµ÷¼Á 2026-04-05 5/250 2026-04-05 22:22 by ßÇßÇßÇßÇ9
[¿¼ÑÐ] Çóµ÷¼Á Ò»Ö¾Ô¸Î÷ÄϽ»Í¨´óѧ085701»·¾³¹¤³Ì 282·Ö +7 ¶à¶à°®³Ôºº±¤ 2026-04-04 7/350 2026-04-05 19:47 by ¸£Å©×Ê»·_»·¾³»ù
[¿¼ÑÐ] һ־Ըͬ¼Ã´óѧ323·Ö£¨080500£©Çóµ÷¼Á +8 yikeniu 2026-04-01 8/400 2026-04-05 18:15 by cql1109
[¿¼ÑÐ] 0703»¯Ñ§321·ÖÇóµ÷¼Á +17 Èýdd. 2026-03-30 18/900 2026-04-05 18:07 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 400·ÖÇóµ÷¼Á +3 ÞÏÞÎÇÒÄÓÍ· 2026-04-04 3/150 2026-04-04 08:41 by jp9609
[¿¼ÑÐ] 311Çóµ÷¼Á +20 zchqwer 2026-04-01 22/1100 2026-04-03 22:09 by lglzsd
[¿¼ÑÐ] 315Çóµ÷¼Á +6 ˳Àí³ÉÕÅ 2026-04-03 8/400 2026-04-03 14:04 by °ÙÁéͯ888
[¿¼ÑÐ] Çó²ÄÁϵ÷¼Á Ò»Ö¾Ô¸Äϲý´óѧ 328·Ö +5 yyy..... 2026-04-03 5/250 2026-04-03 13:46 by °ÙÁéͯ888
[¿¼ÑÐ] һ־Ըɽ¶«´óѧ»¯Ñ§Ó뻯¹¤Ñ§Ôº²ÄÁÏÓ뻯¹¤×¨Ë¶£¬360·ÖÇóµ÷¼Á +4 ²»Ô¸Í¸Â¶ÐÕÃûµÄË 2026-04-02 4/200 2026-04-03 09:29 by ÒÅÍüÏûʧµÄž™
[¿¼ÑÐ] 312 »¯¹¤»òÖÆÒ©µ÷¼Á +8 ССī123 2026-04-02 9/450 2026-04-03 09:12 by zhouxiaoyu
[¿¼ÑÐ] Ò»Ö¾Ô¸¸´µ©²ÄÁÏ£¬Ó¢Ò»×¨Ë¶£¬×Ü·Ö357µ÷¼Á +4 1050389037 2026-04-02 5/250 2026-04-02 21:40 by dongzh2009
[¿¼ÑÐ] 279Çóµ÷¼Á +5 ¸µÎÄÇï 2026-04-02 5/250 2026-04-02 18:10 by ±ÊÂä½õÖÝ
[¿¼ÑÐ] 286·Öµ÷¼Á +20 Faune 2026-03-30 22/1100 2026-04-02 13:24 by clyblh
[¿¼ÑÐ] 266·Ö£¬Ò»Ö¾Ô¸µçÆø¹¤³Ì£¬±¾¿Æ²ÄÁÏ£¬Çó²ÄÁÏרҵµ÷¼Á +10 ÍÛºôºßºôºß 2026-04-01 11/550 2026-04-02 11:31 by lnilvy
[¿¼ÑÐ] ½­ËտƼ¼´óѧÕвÄÁÏÑо¿Éú +4 Su032713. 2026-04-01 5/250 2026-04-01 22:03 by cccchenso
[¿¼ÑÐ] 326Çóµ÷¼Á +4 áÌáÌ×Ð 2026-03-31 4/200 2026-04-01 09:58 by ÎҵĴ¬Îҵĺ£
[¿¼ÑÐ] ¿¼ÑвÄÁϹ¤³Ì351·Öµ÷¼Á +5 Õû¸öºÃµÄ 2026-03-31 5/250 2026-04-01 09:36 by topgun2009
[¿¼ÑÐ] 274Çóµ÷¼Á +6 xiao°®Í¬Ñ§ 2026-03-30 6/300 2026-03-31 10:04 by cal0306
[¿¼ÑÐ] Ò»Ö¾Ô¸´óÁ¬Àí¹¤´óѧ²ÄÁÏÇóµ÷¼Á +6 Gymno 2026-03-30 6/300 2026-03-31 07:26 by Î޼ʵIJÝÔ­
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û