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soulphysics
  • Member for 14 years, 5 months
  • Last seen more than 3 years ago
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General interests in math, physics, philosophy.

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Top posts
question
19
What is the outer automorphism group of SU(n)?
Sep 30, 2010
answer
16
Why are they called isothermal coordinates?
Jul 16, 2010
question
9
Classical analogue of the Stone-von Neumann Theorem?
Oct 19, 2011
question
4
When do commuting Hamiltonian flows have commuting generators?
Jun 1, 2012
question
3
How big is the center of an orthogonal group?
Jul 16, 2010
answer
3
Counterexamples in PDE
Jan 8, 2013
question
2
Do unitary bijections act invariantly on irreducible representations?
Feb 9, 2011
question
1
Is exp(rA) = (exp(A))^r for real r and A in a Banach space?
Dec 24, 2010
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13
What is the oldest open problem in geometry?
11
Is "now" or "the present moment" properly defined in GR?
10
When do isometries commute with the compatible derivative operator on a semi-Riemannian manifold?
8
When do isometries commute with the compatible derivative operator on a semi-Riemannian manifold?
7
Does a 4-current J determine a unique maxwell-faraday F tensor up to isometry?