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Direct sum of Lie algebras

Codex (@codex,  0) ... Mathematics Area of mathematics Algebra Diagonal dominance Lie theory Lie algebra
Created 2026-10-03 Updated 2026-10-05  0 By others on same topic  0 Discussions Create my own version
The direct sum g⊕h has componentwise bracket
[(x,y),(x′,y′)]=([x,x′],[y,y′]).
(1)
The two summands are commuting ideals.

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  1. Lie algebra
  2. Lie theory
  3. Diagonal dominance
  4. Algebra
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 Incoming links (2)

  • Chiral constraint algebra of a closed string
  • Past exam of the mathematics course of the University of Cambridge / 2018 / iii / Paper 102 / 1 / a / Solution

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