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- In the paper, we consider 2-cocycles on an infinite-dimensional Lie algebra L. We obtain all of the 2-cocycles on this Lie algebra and further determine its second cohomology group. 摘要考慮了一類無限維李代數L的二上圈。通過計算，得到了此類李代數的所有的二上圈，從而確定了L的二上同調群。
- cup product of the cohomology group 上同調群的的上積
- cohomology group with coefficients g 有係數g的上同島
- REDUCIBILITY OF COHOMOLOGY GROUP OF A LINE BUNDLE ON G/B (G BE OF TYPE A_2) 射影簇G/B(G為A_2型)上線叢的上同調群的可約性
- For a general twisted conjugate action, the orbit space can be expressed as the nonabelian cohomology of the infinite cyclic group. 對於一般的扭共軛作用，其軌道空間可以表示為無限循環群的非交換上同調。
- If moreover the automorphism involved is of finite order, some special orbits are related to the nonabelian cohomology of a finite cyclic group. 當扭共軛作用中的自同構為有限階時，某些特殊的軌道對應於有限循環群的非交換上同調。
- cyclic cohomology 循環上同調
- Education should not be restricted to any one specific age group. 教育不應限制在任何特定的年齡組上。
- He broke away from that lawless group years ago. 他在幾年前脫離了那個非法團體。
- HOMOTOPY GROUPS AND CUP PRODUCT OF COHOMOLOGY GROUPS 同倫群和上同調群的上乘積
- The group of barbaric soldiers killed many people. 那群野蠻的士兵殺了很多人。
- On the homology and cohomology groups of associative sup eralgebras 結合代數的同調與上同調
- The group was made up of doctors. 這個團體是由醫生組成的。
- COMPOSITION FACTORS OF COHOMOLOGY GROUPS FOR QUANTUM GROUPS 量子群上同調群的合成因子
- A group of boys dashed out of the classroom. 一群男孩子從教室里衝出來。
- I come upon a group of children play in the street. 我遇到一群孩子在街上玩耍。
- He goes about with a group of nice boys. 他經常和一群好孩子在一起玩。
- He is a the most brisk young man in this group. 他是這個小組中最活躍的年輕人。
- He showed me a photo of a family group. 他給我看一張合家歡的照片。
- The chief accountant of a manufacturing group. 一個製造業集團的總會計師。
