1) homologous elements
同调元素
2) cohomology element
上同调元素
1.
Let a character triple (G,N,θ) be associated with a cohomology element ω(θ) being the schur multiplier of G/N,∈(H~2(C/N,C~*)), that the map ω preserves products of characters whenever they are well defined was proved, and then the isomorphism problem of two character triples and the extendibility of fully factored characters of normal solvable subgroups were studied by using this result.
文章探讨了与特征标三元组(G,N,θ)相伴的上同调元素ω(θ)∈H2(G/N,C*)的若干乘法性质,并用此研究了两个特征标三元组的同构问题,以及可解正规子群上完全可分解的特征标到大群的扩张问题。
2.
By some technique, for example, projective repressentation, the theory of coho-mology and so on, we difine a cohomology element ω(θ) in H~2(G/N, C) associated with a character triple (G,N,θ).
借助射影表示以及上同调理论等技术,对每个特征标三元组(G,N,θ)均定义了一个上同调元素ω(θ)∈H~2(G/N,C~*)以描述θ的可扩张性障碍,即θ可扩张为G的特征标当且仅当ω(θ)=1。
4) identical element
相同元素
1.
Identical elements are divided into r disordered groups(in each of which there is at least one element), Sum of all different grouping schemes is called identical elements grouping number,Signed asM.
n个相同元素分成r(r
5) IF-AND-ONLY-IF element
等同元素
6) isotopic element
同位(元)素
补充资料：同调
1.音调相同，比喻有相同的志趣或主张。 2.喻指志趣或主张一致的人。 3.音韵学术语。谓声调相同。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条