dp_homo, dp_dehomo
- dp_homo(dpoly)
- :: ʬ»¶É½¸½Â¿¹à¼°¤ÎÀƼ¡²½
- dp_dehomo(dpoly)
- :: ÀƼ¡Ê¬»¶É½¸½Â¿¹à¼°¤ÎÈóÀƼ¡²½
- return
- ʬ»¶É½¸½Â¿¹à¼°
- dpoly
- ʬ»¶É½¸½Â¿¹à¼°
-
dp_homo()¤Ï, dpoly ¤Î ³Æ¹à t ¤Ë¤Ä¤¤¤Æ, »Ø¿ô¥Ù¥¯¥È¥ë¤ÎŤµ¤ò 1 ¿¤Ð¤·, ºÇ¸å¤ÎÀ®Ê¬¤ÎÃͤò d-deg(t)(d ¤Ï dpoly ¤ÎÁ´¼¡¿ô) ¤È¤·¤¿Ê¬»¶É½¸½Â¿¹à¼°¤òÊÖ¤¹. -
dp_dehomo()¤Ï, dpoly ¤Î³Æ¹à¤Ë¤Ä¤¤¤Æ, »Ø¿ô¥Ù¥¯¥È¥ë¤ÎºÇ¸å¤ÎÀ®Ê¬ ¤ò¼è¤ê½ü¤¤¤¿Ê¬»¶Â¿¹à¼°¤òÊÖ¤¹. - ¤¤¤º¤ì¤â, À¸À®¤µ¤ì¤¿Â¿¹à¼°¤òÍѤ¤¤¿±é»»¤ò¹Ô¤¦¾ì¹ç, ¤½¤ì¤é¤ËŬ¹ç¤¹¤ë¹à½ç½ø¤ò Àµ¤·¤¯ÀßÄꤹ¤ëɬÍפ¬¤¢¤ë.
-
hgr()¤Ê¤É¤Ë¤ª¤¤¤Æ, ÆâÉôŪ¤ËÍѤ¤¤é¤ì¤Æ¤¤¤ë.
[202] X=<<1,2,3>>+3*<<1,2,1>>; (1)*<<1,2,3>>+(3)*<<1,2,1>> [203] dp_homo(X); (1)*<<1,2,3,0>>+(3)*<<1,2,1,2>> [204] dp_dehomo(@); (1)*<<1,2,3>>+(3)*<<1,2,1>>
- »²¾È
-
section
gr,hgr,gr_mod,dgr.
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