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Representation of Lie algebra of germs of smooth/holomorphic functions


Invariant subspaces of Lie group vs invariant subspaces of Lie algebraCalculating the Lie algebra representation of the regular representation on subspace of functions on $mathbb R$.Two different approaches to defining Lie algebra of a Lie groupA subspace is invariant by the Lie group if it is invariant by the Lie algebraLeft-invariant vector fields versus right-invariant vector fieldsLie algebra of a compact Lie groupExplicit Hermitian scalar product on a simple complex Lie algebraTopology on a Lie algebra associated from Lie groupRepresentation of a Lie algebra over the space of smooth functions.Can we study representation of $p$-adic group by studying $p$-adic Lie algebra?













2












$begingroup$


$defOmathcalO
defgmathfrakg$

Suppose $G$ is a real or complex Lie group, with Lie algebra $g$. Write $O_G,1$ (resp. $O_g,0$) for the ring of germs of smooth/holomorphic function on $G$ at $1$ (resp. on $g$ at $0$). If we identify $g$ with left-invariant vector fields on $G$, then we get a Lie algebra representation of $g$ on $O_G,1$. The exponential map $exp:g to G$ is a local isomorphism, so induces an isomorphism of $O_g,0$ and $O_G,1$, so we also get a Lie algebra representation of $g$ on $O_g,0$.



Can the representation of $g$ on $O_g,0$ be described in a way that is intrinsic to $g$, without reference $G$?










share|cite|improve this question









$endgroup$











  • $begingroup$
    I think it might be more or less the dual of the adjoint action of $mathfrakg$ on its universal enveloping algebra $U(mathfrakg)$.
    $endgroup$
    – Qiaochu Yuan
    2 days ago















2












$begingroup$


$defOmathcalO
defgmathfrakg$

Suppose $G$ is a real or complex Lie group, with Lie algebra $g$. Write $O_G,1$ (resp. $O_g,0$) for the ring of germs of smooth/holomorphic function on $G$ at $1$ (resp. on $g$ at $0$). If we identify $g$ with left-invariant vector fields on $G$, then we get a Lie algebra representation of $g$ on $O_G,1$. The exponential map $exp:g to G$ is a local isomorphism, so induces an isomorphism of $O_g,0$ and $O_G,1$, so we also get a Lie algebra representation of $g$ on $O_g,0$.



Can the representation of $g$ on $O_g,0$ be described in a way that is intrinsic to $g$, without reference $G$?










share|cite|improve this question









$endgroup$











  • $begingroup$
    I think it might be more or less the dual of the adjoint action of $mathfrakg$ on its universal enveloping algebra $U(mathfrakg)$.
    $endgroup$
    – Qiaochu Yuan
    2 days ago













2












2








2





$begingroup$


$defOmathcalO
defgmathfrakg$

Suppose $G$ is a real or complex Lie group, with Lie algebra $g$. Write $O_G,1$ (resp. $O_g,0$) for the ring of germs of smooth/holomorphic function on $G$ at $1$ (resp. on $g$ at $0$). If we identify $g$ with left-invariant vector fields on $G$, then we get a Lie algebra representation of $g$ on $O_G,1$. The exponential map $exp:g to G$ is a local isomorphism, so induces an isomorphism of $O_g,0$ and $O_G,1$, so we also get a Lie algebra representation of $g$ on $O_g,0$.



Can the representation of $g$ on $O_g,0$ be described in a way that is intrinsic to $g$, without reference $G$?










share|cite|improve this question









$endgroup$




$defOmathcalO
defgmathfrakg$

Suppose $G$ is a real or complex Lie group, with Lie algebra $g$. Write $O_G,1$ (resp. $O_g,0$) for the ring of germs of smooth/holomorphic function on $G$ at $1$ (resp. on $g$ at $0$). If we identify $g$ with left-invariant vector fields on $G$, then we get a Lie algebra representation of $g$ on $O_G,1$. The exponential map $exp:g to G$ is a local isomorphism, so induces an isomorphism of $O_g,0$ and $O_G,1$, so we also get a Lie algebra representation of $g$ on $O_g,0$.



Can the representation of $g$ on $O_g,0$ be described in a way that is intrinsic to $g$, without reference $G$?







representation-theory lie-groups lie-algebras






share|cite|improve this question













share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked 2 days ago









UserUser

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35218











  • $begingroup$
    I think it might be more or less the dual of the adjoint action of $mathfrakg$ on its universal enveloping algebra $U(mathfrakg)$.
    $endgroup$
    – Qiaochu Yuan
    2 days ago
















  • $begingroup$
    I think it might be more or less the dual of the adjoint action of $mathfrakg$ on its universal enveloping algebra $U(mathfrakg)$.
    $endgroup$
    – Qiaochu Yuan
    2 days ago















$begingroup$
I think it might be more or less the dual of the adjoint action of $mathfrakg$ on its universal enveloping algebra $U(mathfrakg)$.
$endgroup$
– Qiaochu Yuan
2 days ago




$begingroup$
I think it might be more or less the dual of the adjoint action of $mathfrakg$ on its universal enveloping algebra $U(mathfrakg)$.
$endgroup$
– Qiaochu Yuan
2 days ago










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