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Jim Humphreys's user avatar
Jim Humphreys's user avatar
Jim Humphreys's user avatar
Jim Humphreys
  • Member for 14 years, 10 months
  • Last seen more than 4 years ago
2 votes

Normalized invariant form on a Kac-Moody Algebra

2 votes
Accepted

Well-understood bases for Grothendieck groups of modular representation categories

2 votes

Alternative or reprint of Carter's "Finite Groups of Lie Type: Conjugacy Classes and Complex Characters"

2 votes
Accepted

Characterization of restricted weights of representations of real semisimple Lie groups

2 votes

Reference request: expository text on the structure of reductive groups over non-archimedean local fields

2 votes
Accepted

p-groups as Sylow subgroups

2 votes

MathSciNet vs Google Scholar

2 votes

Irreducible representations of W-algebra in case $\mathfrak sl_3$

2 votes

Modular Forms and Root Systems

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Highest weights of the restriction of an irreducible representation of a simple group to a Levi subgroup

2 votes

What is the subgroup generated by involutions?

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Representation of Lie algebra sl_2.

2 votes
Accepted

is there an English translation of the book by Guy Barles?

2 votes

Inverting the Weyl Character Formula

2 votes

Steinberg Representations of Finite Groups of Lie Type

2 votes

Historical question concerning Jordan's theorem

2 votes

Indices for math texbooks/monographs

2 votes

Looking for figure of part of an A2 affine building

2 votes

Simultaneous decomposition into generalized eigenvectors

2 votes

What is a canonical set of representatives in $GL(n,F)$ for the vertices in the Bruhat Tits building?

2 votes
Accepted

Primitive ideals of the universal enveloping algebras of affine Lie algebras

2 votes

Coproduct on coordinate ring of finite algebraic group

2 votes

Decomposition of the ring of functions on the unipotent radical of a Borel

2 votes
Accepted

Sizes of twisted conjugacy classes of $PSL(n,q)$

2 votes

Subexpressions of reduced words in Coxeter groups

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Product of two algebraic subgroups of a (solvable) group = another algebraic subgroup?

2 votes

Which groups admit a unique Lie group structure?

2 votes

semisimple restricted representation

2 votes

Why is p=2 special, if we want to classify cplx. representation of GL2(Zp)?

2 votes

Intersections of conjugates of Lie subgroups

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