Give an example of a non-self-adjoint operator on a Hilbert space $H$ whose range is $H$ and which is not invertible.
I cannot think of an example to save my life. Any solutions/hints are greatly appreciated.
2026-03-28 21:34:28.1774733668
Give an example of a non-self-adjoint operator on a Hilbert space $H$ whose range is $H$ and which is not invertible.
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