A sufficient condition for that an operator map is of the form of functional calculus
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DOI: 10.1007/s11117-018-0610-5
Abstract: Let $${\mathscr {H}}$$H be a Hilbert space, J be an open interval and $$B_J({\mathscr {H}})$$BJ(H) be the set of all self-adjoint operators on $${\mathscr {H}}$$H with spectra in J. Suppose that $$\phi :B_J({\mathscr {H}})\rightarrow B({\mathscr… read more here.
Keywords: sufficient condition; mathscr; operator map; phi ... See more keywords