Representation Theory of Lie Groups Ias Park City Mathematics Series, V 8
Derived algebraic geometry and deformation quantization
Donna Testerman, lauréate du Credit Suisse Award for best teaching 2020
[Wikipedia] Theory of Lie groups
The sound of some grassmannians
In mathematics, a Lie algebra is reductive if its adjoint representation is completely reducible, whence the name. More concretely, a Lie algebra is reductive if it is a direct sum of a semisimple Lie algebra and an abelian Lie algebra:
there are alternative characterizations, given below.
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