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What is the quotient of the unit sphere by the bilateral shift on infinite-dimensional separable real Hilbert space?
Let H denote the real Hilbert space 𝓁2(ℤ) with its usual inner product.
If {en | n ∈ ℤ} denotes its standard orthonormal basis, define the unitary mapping W : H → H via W(en) = en+1, extended ...
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