User Jim Humphreys

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Fixed Points of the Weyl Group action on a Maximal Torus and the Center of a Reductive Group

answered Aug 11, 2018 at 18:54

1 vote

Accepted

Definition of the weight lattice for a nonreduced root system

answered Dec 9, 2018 at 20:54

1 vote

Accepted

Coinduced modules in the BGG category $\mathcal O$ over complex semisimple Lie algebras

answered Sep 8, 2018 at 18:22

1 vote

Reflection reverses a root string

answered Aug 27, 2019 at 15:37

1 vote

Weight spaces of representations of finite dimensional simple Lie algebras

answered Jul 20, 2019 at 12:55

1 vote

Regular semisimple elements in $SL(n,q)$

answered Apr 17, 2019 at 23:33

1 vote

Verma modules in category $\mathcal{O}^\mathfrak{p}$

answered Mar 29, 2019 at 0:52

0 votes

Cyclic vectors in irreducible representations of simple Lie algebras

answered Jul 4, 2019 at 13:08

0 votes

Multiplication of extreme vector

answered Apr 20, 2010 at 13:17

0 votes

Recovering a Lie algebra from its affine Lie algebra

answered May 24, 2012 at 15:34

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Accepted

Weight polytopes of the fundamental representations of simple Lie groups

answered Oct 15, 2014 at 14:14

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Accepted

Characteristic polynomials of reductive subgroup over C

answered Aug 24, 2014 at 19:08

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Rank of the character group of a maximal $K$-torus for semisimple and adjoint algebraic groups

answered Jul 26, 2013 at 22:16

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Clifford's Theorem with all its aspects in modern language, looking for a textbook

answered Nov 17, 2013 at 17:42

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704 Answers

Fixed Points of the Weyl Group action on a Maximal Torus and the Center of a Reductive Group

Definition of the weight lattice for a nonreduced root system

Coinduced modules in the BGG category $\mathcal O$ over complex semisimple Lie algebras

Reflection reverses a root string

Weight spaces of representations of finite dimensional simple Lie algebras

Regular semisimple elements in $SL(n,q)$

Verma modules in category $\mathcal{O}^\mathfrak{p}$

Cyclic vectors in irreducible representations of simple Lie algebras

Multiplication of extreme vector

Recovering a Lie algebra from its affine Lie algebra

Weight polytopes of the fundamental representations of simple Lie groups

Characteristic polynomials of reductive subgroup over C

Rank of the character group of a maximal $K$-torus for semisimple and adjoint algebraic groups

Clifford's Theorem with all its aspects in modern language, looking for a textbook