苏州大学学报(自然科学版)
囌州大學學報(自然科學版)
소주대학학보(자연과학판)
JOURNAL OF SUZHOU UNIVERSITY(NATURAL SCIENCE)
2005年
4期
17-23
,共7页
初等自同构%分次Betti数%稳定理想%强稳定理想
初等自同構%分次Betti數%穩定理想%彊穩定理想
초등자동구%분차Betti수%은정이상%강은정이상
elementary automorphism%graded Betti number%stable ideal%strongly stable ideal
研究了in(ψij a(I))与I的分次Betti数间的关系;I为单项式理想时,存在整数序列(i1,j1),…,(ir,jr)满足ik<jk,k=1,…,r,使得in(ψia rjr(…in(ψia 1j1(I))…)为强稳定理想,且in(ψia rjr(…in(ψia 1j1(I))…)是唯一的.
研究瞭in(ψij a(I))與I的分次Betti數間的關繫;I為單項式理想時,存在整數序列(i1,j1),…,(ir,jr)滿足ik<jk,k=1,…,r,使得in(ψia rjr(…in(ψia 1j1(I))…)為彊穩定理想,且in(ψia rjr(…in(ψia 1j1(I))…)是唯一的.
연구료in(ψij a(I))여I적분차Betti수간적관계;I위단항식이상시,존재정수서렬(i1,j1),…,(ir,jr)만족ik<jk,k=1,…,r,사득in(ψia rjr(…in(ψia 1j1(I))…)위강은정이상,차in(ψia rjr(…in(ψia 1j1(I))…)시유일적.
We study the relationship of the graded Betti numbers between in( ψij a (I) ) and I. When I is a monomialideal,there exists a sequence of pairs of integers( i1 ,j1 ) ,…, ( ir ,jr) with ik<jk for k = 1 ,…, r ,such that in( ψra rjr(…in( ψi a 1j1 ( I ) )… ) ) is strongly stable, and we show that in( ψia rjr(…in( ψi a 1j1 ( I ) )… ) ) is unique.