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In the context of representation theory, particularly in the study of Lie algebras and Lie groups, the term "weight" refers to a specific type of character associated with a representation. ### Key Points about Weights: 1. **Representation of a Lie Algebra**: A representation of a Lie algebra \( \mathfrak{g} \) on a vector space \( V \) involves a linear action of the algebra on \( V \).

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  1. Representation theory of Lie algebras
  2. Representation theory
  3. Fields of abstract algebra
  4. Fields of mathematics
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