论文标题

雅各布森·莫罗佐夫(Jacobson-Morozov)的引理代数超组

Jacobson-Morozov Lemma for Algebraic Supergroups

论文作者

Entova-Aizenbud, Inna, Serganova, Vera

论文摘要

给定一个准还原代数超级组$ g $,我们使用对称单体类别的半密码理论来定义一个对称的单体函数$φ_x:\ rep(g)\ to \ rep(osp(osp(1 | 2))与任何给定元素$ x \ in \ in \ in \ bar 1 rm y lie lie y lie y lie ply y lie peffect(1 | 2)$。对于nilpotent Elements $ x $,我们表明可以使用与$ x $相关的deligne过滤来定义函子$φ_x$。 我们使用这种方法证明了代数超组的Jacobson-Morozov引理的类似物。即,我们在\ mathrm {lie}(g)_ {\ bar 1} $上给出了奇数nilpotent元素$ x \的必要条件,它定义了supergroups $ osp(1 | 2)\ g $ to g $的嵌入,以便$ x $在相应的lie algebra homomormorphism中均为$ x $。

Given a quasi-reductive algebraic supergroup $G$, we use the theory of semisimplifications of symmetric monoidal categories to define a symmetric monoidal functor $Φ_x: \Rep(G) \to \Rep(OSp(1|2))$ associated to any given element $x \in \mathrm{Lie}(G)_{\bar 1}$. For nilpotent elements $x$, we show that the functor $Φ_x$ can be defined using the Deligne filtration associated to $x$. We use this approach to prove an analogue of the Jacobson-Morozov Lemma for algebraic supergroups. Namely, we give a necessary and sufficient condition on odd nilpotent elements $x\in \mathrm{Lie}(G)_{\bar 1}$ which define an embedding of supergroups $OSp(1|2)\to G$ so that $x$ lies in the image of the corresponding Lie algebra homomorphism.

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