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[61] Lyle Noakes. Invariant subspaces and perturbations . Proc. Amer. Math. Soc. 114 (1992) 365-370. MR 1087467.
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[62] Khristo N. Boyadzhiev. A trace formula for two unitary operators with rank one commutator . Proc. Amer. Math. Soc. 113 (1991) 157-162. MR 1057950.
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[63] Daoxing Xia. Principal distributions for almost unperturbed Schr\"odinger pairs of operators . Proc. Amer. Math. Soc. 112 (1991) 745-754. MR 1042275.
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[64] Daoxing Xia. Some trace formulas for almost unperturbed Schr\"odinger pairs of operators . Proc. Amer. Math. Soc. 112 (1991) 755-764. MR 1042276.
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[65] James S. Howland. Random perturbations of singular spectra . Proc. Amer. Math. Soc. 112 (1991) 1009-1011. MR 1037208.
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[66] F. O. Farid. Spectral properties of perturbed linear operators and their application to infinite matrices . Proc. Amer. Math. Soc. 112 (1991) 1013-1022. MR 1057943.
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[67] Lige Li and A. G. Ramm. A singular perturbation result and its application to mathematical ecology . Proc. Amer. Math. Soc. 111 (1991) 1043-1050. MR 1043414.
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[68] B. Najman. Convexity properties of distinguished eigenvalues of certain classes of operators . Proc. Amer. Math. Soc. 111 (1991) 221-225. MR 1027100.
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[69] Domingo A. Herrero. A unicellular universal quasinilpotent weighted shift . Proc. Amer. Math. Soc. 110 (1990) 649-652. MR 1023343.
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[70] Ruy Exel and Terry Loring. Almost commuting unitary matrices . Proc. Amer. Math. Soc. 106 (1989) 913-915. MR 975641.
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[71] Man Duen Choi. Almost commuting matrices need not be nearly commuting . Proc. Amer. Math. Soc. 102 (1988) 529-533. MR 928973.
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[72] Steven Bloom, Anita Tabacco Vignati and Marco Vignati. Interpolation and factorization of operators . Proc. Amer. Math. Soc. 102 (1988) 567-576. MR 928982.
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[73] C. K. Fong. Most normal operators are diagonal . Proc. Amer. Math. Soc. 99 (1987) 671-672. MR 877037.
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[74] James S. Howland. Finite rank perturbations of singular spectra . Proc. Amer. Math. Soc. 97 (1986) 634-636. MR 845979.
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[75] Robin Harte. Almost open mappings between normed spaces . Proc. Amer. Math. Soc. 90 (1984) 243-249. MR 727242.
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[76] R. R. Smith and J. D. Ward. A note on polynomial operator approximation . Proc. Amer. Math. Soc. 88 (1983) 491-494. MR 699420.
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[77] A. G. Ramm. Perturbations preserving asymptotics of spectrum with remainder . Proc. Amer. Math. Soc. 85 (1982) 209-212. MR 652444.
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[78] V. S. Sunder. Distance between normal operators . Proc. Amer. Math. Soc. 84 (1982) 483-484. MR 643734.
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[79] Zbigniew Słodkowski. On subharmonicity of the capacity of the spectrum . Proc. Amer. Math. Soc. 81 (1981) 243-249. MR 593466.
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[80] Stephen Campbell and John Daughtry. The stable solutions of quadratic matrix equations . Proc. Amer. Math. Soc. 74 (1979) 19-23. MR 521866.
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[81] Joel Anderson. The Haar functions almost diagonalize multiplication by $x$ . Proc. Amer. Math. Soc. 73 (1979) 361-362. MR 518520.
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[82] Horst Behncke. Finite-dimensional perturbations . Proc. Amer. Math. Soc. 72 (1978) 82-84. MR 503536.
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[83] Sandy Grabiner. Ascent, descent and compact perturbations . Proc. Amer. Math. Soc. 71 (1978) 79-80. MR 495841.
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[84] L. Weis. On perturbations of Fredholm operators in $L\sb{p}(\mu )$-spaces . Proc. Amer. Math. Soc. 67 (1977) 287-292. MR 0467377.
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[85] David Legg and Joseph Ward. Essentially Hermitian operators on $l\sb{1}$ are compact perturbations of Hermitians . Proc. Amer. Math. Soc. 67 (1977) 224-226. MR 0458210.
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[86] John Phillips. Nearest normal approximation for certain operators . Proc. Amer. Math. Soc. 67 (1977) 236-240. MR 0458212.
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[87] J. Dombrowski. Positive perturbations of unbounded operators . Proc. Amer. Math. Soc. 64 (1977) 287-290. MR 0448142.
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[88] S. R. Caradus. Perturbation theory for generalized Fredholm operators. II . Proc. Amer. Math. Soc. 62 (1977) 72-76. MR 0435896.
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[89] Harkrishan Vasudeva. One dimensional perturbations of compact operators . Proc. Amer. Math. Soc. 57 (1976) 58-60. MR 0445318.
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[90] K.-H. Förster and M. A. Kaashoek. The asymptotic behaviour of the reduced minimum modulus of a Fredholm operator . Proc. Amer. Math. Soc. 49 (1975) 123-131. MR 0372660.
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Results: 61 to 90 of 96 found      Go to page: 1 2 3 4

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