On a question of Douglas and Fillmore
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- by James A. Deddens and Joseph G. Stampfli PDF
- Bull. Amer. Math. Soc. 79 (1973), 327-330
References
- I. David Berg, An extension of the Weyl-von Neumann theorem to normal operators, Trans. Amer. Math. Soc. 160 (1971), 365–371. MR 283610, DOI 10.1090/S0002-9947-1971-0283610-0
- L. G. Brown, R. G. Douglas, and P. A. Fillmore, Unitary equivalence modulo the compact operators and extensions of $C^{\ast }$-algebras, Proceedings of a Conference on Operator Theory (Dalhousie Univ., Halifax, N.S., 1973) Lecture Notes in Math., Vol. 345, Springer, Berlin, 1973, pp. 58–128. MR 0380478
- James A. Deddens, A necessary condition for quasitriangularity, Proc. Amer. Math. Soc. 32 (1972), 630–631. MR 288614, DOI 10.1090/S0002-9939-1972-0288614-6
- R. G. Douglas, Banach algebra techniques in the theory of Toeplitz operators, Conference Board of the Mathematical Sciences Regional Conference Series in Mathematics, No. 15, American Mathematical Society, Providence, R.I., 1973. Expository Lectures from the CBMS Regional Conference held at the University of Georgia, Athens, Ga., June 12–16, 1972. MR 0361894, DOI 10.1090/cbms/015
- Paul R. Halmos, A Hilbert space problem book, D. Van Nostrand Co., Inc., Princeton, N.J.-Toronto, Ont.-London, 1967. MR 0208368
- J. G. Stampfli, Which weighted shifts are subnormal?, Pacific J. Math. 17 (1966), 367–379. MR 193520, DOI 10.2140/pjm.1966.17.367
Additional Information
- Journal: Bull. Amer. Math. Soc. 79 (1973), 327-330
- MSC (1970): Primary 47B05, 47B15, 47B20
- DOI: https://doi.org/10.1090/S0002-9904-1973-13155-6
- MathSciNet review: 0318937