吉林师范大学学报:自然科学版
吉林師範大學學報:自然科學版
길림사범대학학보:자연과학판
Jilin Normal University Journal:Natural Science Edition
2012年
4期
1-5
,共5页
3-流形%Heegaard分解%同调相交核
3-流形%Heegaard分解%同調相交覈
3-류형%Heegaard분해%동조상교핵
3-manifold%Heegaard spliting%homological intersecting kernel Heegaard distance
本文主要考虑三维流形Heegaard分解的同调相交核,得到的主要结果如下:设(M;U,V;S)为3-流形M的Heegaard分解,包含映射i:S→U,J:S→V诱导的同调群同态分别为i#:H1(S)→H1(U),j#:H1(s)→H1(V),则H2(M)=keri#∩kerj#.
本文主要攷慮三維流形Heegaard分解的同調相交覈,得到的主要結果如下:設(M;U,V;S)為3-流形M的Heegaard分解,包含映射i:S→U,J:S→V誘導的同調群同態分彆為i#:H1(S)→H1(U),j#:H1(s)→H1(V),則H2(M)=keri#∩kerj#.
본문주요고필삼유류형Heegaard분해적동조상교핵,득도적주요결과여하:설(M;U,V;S)위3-류형M적Heegaard분해,포함영사i:S→U,J:S→V유도적동조군동태분별위i#:H1(S)→H1(U),j#:H1(s)→H1(V),칙H2(M)=keri#∩kerj#.
Let M be a closed connected oriented 3-manifold,(M;U,V;S)a Heegaard splitting for M.The main result of the present paper is as follows:Suppose the inclusions i:S→U,j:S→V induce the homomorphisms i#:H1(S)→H1(U),j#H1(S)→H1(V),then H2(M)=keri#∩kerj#.