On the group of lagrangian bisections of a symplectic groupoid

On the group of lagrangian bisections of a symplectic groupoid
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关于辛群曲面的拉格朗日平分群

DOI:
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发表时间:
2001
期刊:
影响因子:
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通讯作者:
T. Rybicki
T. Rybicki
中科院分区:
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文献类型:
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作者:
T. Rybicki

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辛广群的拉格朗日二分群推广了辛同构群的概念。流同态是这个群的基本不变量。证明了这个群是正则李群。群的精确(哈密顿)二分法也进行了研究。通量同态的存在使得能够刻画精确的同位素。
The group of lagrangian bisections of a symplectic groupoid extends the concept of the symplectomorphism group. The flux homomorphism is a basic invariant of this group. It is shown that this group is a regular Lie group. The group of exact (hamiltonian) bisections is also studied. The existence of the flux homomorphism enables a characterization of exact isotopies.