Jim Humphreys
Moreorless retired professor at UMass Amherst.
Basically an algebraist with interests in Lie theory,
specifically representation theory and related
algebraic geometry.
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 U. Massachusetts, Amherst
 math.umass.edu/~jeh
 Member for 5 years, 9 months
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 Last seen 6 hours ago
Top Posts (659) All Questions Answers  Votes Newest
34
Implications of nonnegativity of coefficients of arbitrary KazhdanLusztig polynomials?
nov 18 '12
32
What role does the “dual Coxeter number” play in Lie theory (and should it be called the “Kac number”)?
may 22 '10
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