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轨形上哈密顿向量场的中心扩张
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作者 黄开河 陈洪宇 杜承勇 《四川师范大学学报(自然科学版)》 CAS 2024年第6期841-846,共6页
研究轨形上的辛向量场和哈密顿向量场,得到轨形上哈密顿向量场李代数的中心扩张,并计算该中心扩张的2-cocycle.
关键词 辛向量场 哈密顿向量场 李代数中心扩张 轨形
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Central extensions of generalized orthosymplectic Lie superalgebras
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作者 CHANG ZhiHua WANG YongJie 《Science China Mathematics》 SCIE CSCD 2017年第2期223-260,共38页
We completely determine the universal central extension of the generalized orthosymplectic Lie superalgebra ospm 12n(R,-) that is coordinatized by an arbitrary unital associative superalgebra (R,-) with superinvol... We completely determine the universal central extension of the generalized orthosymplectic Lie superalgebra ospm 12n(R,-) that is coordinatized by an arbitrary unital associative superalgebra (R,-) with superinvolution. As a result, an identification between the second homology group of the Lie superalgebra ospm|2n (R,-) and the first skew-dihedral homology group of the associative superalgebra (R,-) with superin-volution is created for positive integers m and n with (m, n)≠ (1, 1) and (m, n)≠(2, 1). The second homology groups of the Lie superalgebras ospm1|2(R,-) and ospm|2n (R,-) are also characterized explicitly. 展开更多
关键词 orthosymplectic Lie superalgebra universal central extension Z/2Z-graded skew-dihedral homol-ogy associative superalgebra with superinvolution
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