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References to 'simple and semi-simple Lie algebras'
1. Borel subalgebra by mathcam
2. Borel subgroup by CWoo
3. Cartan subalgebra by bwebste
4. Cartan's criterion by bwebste
5. Casimir operator by bwebste
6. classification of finite-dimensional representations of semi-simple Lie algebras by bwebste
7. cohomology of semi-simple Lie algebras by asteroid
8. Dynkin diagram by bwebste
9. extended Cartan matrix by benjaminfjones
10. invariant scalar product by benjaminfjones
11. Kac-Moody algebra by bwebste
12. Lie algebra representation by mathcam
13. Lie algebras from other algebras by Algeboy
14. Lie group by rmilson
15. nilpotent cone by rmilson
16. parabolic subgroup by bwebste
17. pictures of Dynkin diagrams by Dr_Absentius
18. radical by bwebste
19. representation theory of $\mathfrak{sl}_2 \mathbb{C}$ by benjaminfjones
20. restricted Lie algebra by Algeboy
21. root system by rmilson
22. root system underlying a semi-simple Lie algebra by rmilson
23. semisimple group by Algeboy
24. theory from orders of classical groups by Algeboy
25. trace forms on algebras by Algeboy
26. Verma module by owenjonesuk
27. weight (Lie algebras) by GrafZahl
28. weight lattice by bwebste
29. Weyl's theorem by bwebste