George McNinch

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Name George McNinch
Member for 3 years
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Location Tufts University
Age 45
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12
Lifting varieties to characteristic zero.
12
“Why” is every polynomial representation of SL(2) selfdual?
10
Is the normalizer of a reductive subgroup reductive?
7
What are “classical groups”?
7
Do semisimple algebraic groups always have faithful irreducible representations?
6
Connectedness of centralizers and regular elements in unipotent groups
6
Innocent question on tensor products of modular representations
6
Are the Weyl modules projectives?
5
Rational forms of simple Lie algebras
5
Tensor product of simple representations
5
Existence of proper invariant subset in an irreducible action
5
surjectivity of irreducible representation
5
Geometric vs Arithmetic Frobenius
5
Whenever I read “centraliser of maximal split torus”, I think of…
4
any linear algebraic group rational?
4
Non-split extensions of $GL_n(F_q)$ by $F_q^n$ ?
4
If a tensor product of modules is semi-simple, are the tensor factors semi-simple ?
4
Diagonalizable subgroups of a connected linear algebraic group
4
Diagonalizable subgroups in a simply connected group
4
Comparing algebraic group orbits over big and small algebraically closed fields
4
Rationality of algebraic groups
3
Cayley Transform for all reductive groups a.k.a an algebraic logarithm
3
cohomology theory for algebraic groups
3
Lie Algebras and Simple Connectivity for general algebraic groups
3
Can a reductive group act non-linearly on a vector group?
3
Density question in algebraic group
3
Springer isomorphisms and parabolics
3
Uniform setting for computing orders of algebraic groups over finite quotients of the integers?
3
About $G$-modules versus $Lie(G)$-modules for algebraic groups
3
Are there “reasonable” criteria for existence/non-existence of Levi factors or their conjugacy in prime characteristic?
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