Answer to Question #183541 in Functional Analysis for anjali

Question #183541

let H be finite separable hilbert space. show that H is unitarily isomorphic to cʳ for some r ∊ N.


1
Expert's answer
2021-05-07T09:09:02-0400


H be finite separable hilbert space


 U : H → H on a Hilbert space H that satisfies U*U = UU* = I, where U* is the adjoint of U, and I : H → H is the identity operator.


 A unitary operator is a bounded linear operator U : H → H on a Hilbert space H for which the following hold:

U is surjective

. A unitary operator is a bounded linear operator U : H → H on a Hilbert space H for which the following hold:

the range of U is dense in H,



H is unitarily isomorphic to cʳ for some r ∊ N.


"a=(a_i) \\space i\\epsilon n \\space {\\epsilon} f(n) \\space and \\space Cx =a , \\space \\sum _{i=a}^{\\infin}a_ie_i"

Thus every separable Hilbert space can be mapped onto f(n) by a unitary operator. We say that every separable Hilbert space is unitarily isomorphic to f(n)

f(n)=cr and r"\\epsilon" N






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