User Jim Humphreys

1 vote

Maximal soluble subgroups in a parabolic subgroup of finite classical simple group

answered Nov 24, 2012 at 21:54

1 vote

A polynomial homomorphism from Gl to the group of units is a power of the determinant

answered Jul 13, 2012 at 16:53

1 vote

description of an endomorphism algebra

answered Jun 17, 2012 at 16:24

1 vote

Steinberg Group as a Lattice in a lie group

answered Aug 21, 2012 at 20:00

1 vote

Conjugacy classes in Aut(G)

answered Jul 16, 2012 at 14:14

1 vote

Difference between action of group element and Lie algebra element in smooth representation

answered Mar 29, 2011 at 15:19

1 vote

Simple groups with the same cardinality as PSL_2(Z/p)

answered Apr 12, 2011 at 16:56

1 vote

Simple groups with the same cardinality as PSL_2(Z/p)

answered Apr 19, 2011 at 18:02

1 vote

Accepted

algebro-geometric properties of morphisms between algebraic groups

answered Aug 17, 2011 at 21:23

1 vote

Generating a reductive real Lie group with finitely many maximal real tori

answered Jan 24, 2012 at 21:39

1 vote

Are nilpotent orbits degenerations of semi-simple orbits ?

answered Jan 14, 2012 at 16:00

1 vote

Structure of $[S(\mathfrak{g})\otimes S(\mathfrak{g})]^G$ for semisimple $\mathfrak{g}$

answered Jan 14, 2012 at 16:29

1 vote

Reference request: A theorem by S. Garrison

answered Apr 13, 2010 at 14:43

1 vote

Accepted

Archive of the Work of J Sutherland Frame

answered Feb 24, 2010 at 23:09

1 vote

References for Lie superalgebras

answered Mar 7, 2010 at 22:01

1 vote

Reps of groups and reps of algebras

answered Aug 23, 2010 at 20:36

1 vote

Should one use "above" and "below" in mathematical writing?

answered Aug 11, 2010 at 16:08

1 vote

Computing the index of a Lie algebra: what is known beyond the reductive case?

answered Aug 30, 2010 at 15:03

1 vote

Accepted

Richardson Classes and the Bala Carter Theorem

answered Dec 6, 2010 at 17:52

1 vote

Connectedness of centralizers and regular elements in unipotent groups

answered Feb 13, 2011 at 18:04

1 vote

Significance of half-sum of positive roots belonging to root lattice?

answered Dec 1, 2016 at 19:01

1 vote

When a connected solvable Lie group has a normal maximal torus, is it true that this torus is a subgroup of the center?

answered Aug 21, 2016 at 22:39

1 vote

Centralizers of subtori in reductive groups, derived subgroups

answered May 20, 2017 at 13:16

1 vote

Chevalley restriction theorem for commuting pairs

answered Mar 5, 2017 at 20:20

1 vote

Accepted

Generalization of a theorem of Steinberg

answered Aug 4, 2015 at 19:16

1 vote

Regular functions on nilpotent orbits and their covers

answered Oct 17, 2015 at 19:34

1 vote

Replacement for Lie-algebra complements

answered Feb 18, 2016 at 23:37

1 vote

Accepted

Choosing canonical representatives of Weyl group elements, some questions

answered Jun 17, 2017 at 15:56

1 vote

representations of an algebraic group and extension of scalars

answered Dec 23, 2017 at 2:02

1 vote

Do the absolute roots restricting to a given root form a Galois orbit?

answered Aug 5, 2018 at 15:41

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704 Answers

Maximal soluble subgroups in a parabolic subgroup of finite classical simple group

A polynomial homomorphism from Gl to the group of units is a power of the determinant

description of an endomorphism algebra

Steinberg Group as a Lattice in a lie group

Conjugacy classes in Aut(G)

Difference between action of group element and Lie algebra element in smooth representation

Simple groups with the same cardinality as PSL_2(Z/p)

Simple groups with the same cardinality as PSL_2(Z/p)

algebro-geometric properties of morphisms between algebraic groups

Generating a reductive real Lie group with finitely many maximal real tori

Are nilpotent orbits degenerations of semi-simple orbits ?

Structure of $[S(\mathfrak{g})\otimes S(\mathfrak{g})]^G$ for semisimple $\mathfrak{g}$

Reference request: A theorem by S. Garrison

Archive of the Work of J Sutherland Frame

References for Lie superalgebras

Reps of groups and reps of algebras

Should one use "above" and "below" in mathematical writing?

Computing the index of a Lie algebra: what is known beyond the reductive case?

Richardson Classes and the Bala Carter Theorem

Connectedness of centralizers and regular elements in unipotent groups

Significance of half-sum of positive roots belonging to root lattice?

When a connected solvable Lie group has a normal maximal torus, is it true that this torus is a subgroup of the center?

Centralizers of subtori in reductive groups, derived subgroups

Chevalley restriction theorem for commuting pairs

Generalization of a theorem of Steinberg

Regular functions on nilpotent orbits and their covers

Replacement for Lie-algebra complements

Choosing canonical representatives of Weyl group elements, some questions

representations of an algebraic group and extension of scalars

Do the absolute roots restricting to a given root form a Galois orbit?