Products of positive operators

Murphy, Gerard

doi:10.1090/S0002-9939-97-04019-7

Products of positive operators
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by Gerard J. Murphy

Proc. Amer. Math. Soc. 125 (1997), 3675-3677

DOI: https://doi.org/10.1090/S0002-9939-97-04019-7

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Abstract:

A new, very simple proof is given of a result of P. Y. Wu which asserts that every unitary operator on an infinite-dimensional Hilbert space is a product of positive operators.

References

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