Approximability of the inverse of an operator

Feintuch, Avraham

doi:10.1090/S0002-9939-1978-0461178-5

Approximability of the inverse of an operator
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Proc. Amer. Math. Soc. 69 (1978), 109-110 Request permission

Abstract:

Let A be an invertible operator on a complex Hilbert space $\mathcal {H}$. A necessary and sufficient condition is given for ${A^{ - 1}}$ to be a weak limit of polynomials in A.

References

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