Jim Humphreys's user avatar
Jim Humphreys's user avatar
Jim Humphreys's user avatar
Jim Humphreys
  • Member for 14 years, 1 month
  • Last seen more than 3 years ago
82 votes

Motivating the Casimir element

51 votes

Books you would like to read (if somebody would just write them…)

48 votes

Fraktur symbols for Lie algebras

47 votes
Accepted

What is significant about the half-sum of positive roots?

44 votes

Fields of mathematics that were dormant for a long time until someone revitalized them

38 votes

Pseudonyms of famous mathematicians

38 votes
Accepted

Rep Theory Consequences of Bott--Weil--Borel

31 votes

How might M.C. Escher have designed his patterns?

30 votes

Facts from algebraic geometry that are useful to non-algebraic geometers

29 votes

Why aren't representations of monoids studied so much?

28 votes
Accepted

About unpublished lecture notes of Philip Hall

25 votes
Accepted

Why are affine Lie algebras called affine?

24 votes
Accepted

Should I become a Mathscinet reviewer?

24 votes
Accepted

What to do now that Lusztig's and James' conjectures have been shown to be false?

23 votes

Isomorphic general linear groups implies isomorphic fields?

22 votes

Is there a Morse theory proof of the Bruhat decomposition?

21 votes
Accepted

Cohomology of Flag Varieties

21 votes
Accepted

On the full reducibility of representations of reductive Lie algebras

21 votes
Accepted

Why the BGG category O?

21 votes
Accepted

Lie algebras of algebraic groups

20 votes

Never appeared forthcoming papers

20 votes

Why are $S$-arithmetic groups interesting?

20 votes
Accepted

Small-index subgroups of SL(3,Z)

19 votes

Weyl group actions on 0-weight spaces

19 votes
Accepted

Complex root systems

18 votes
Accepted

Low dimensional nilpotent Lie algebras

18 votes

When and why did the postdoctoral position originate?

18 votes
Accepted

Representation theory of the general linear group over a finite prime field

18 votes

What is modular representation theory for groups good for?

18 votes
Accepted

Why are they called Specht Modules?

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