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Tomas's user avatar
Tomas
  • Member for 9 years, 9 months
  • Last seen more than 8 years ago
  • China
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24
Does an unbounded operator $T$ with non-empty spectrum have an unbounded spectrum?
12
Existence of closed operators with arbitrary dense domain of a given Banach space
10
What's the Fourier transform of these functions?
10
Why is it hard to obtain improved $L^6$ bound of eigenfunction of Laplacian on 2-dimensional compact Riemannian manifold?
7
Is every $C_0$ semigroup on a Hilbert space automatically a $C_0$ group on a larger space?

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