Gong, Weibang A short proof to a Berberian’s theorem. (English) Zbl 0638.47021 An. Univ. Craiova, Ser. Mat. Fiz.-Chim. 9, 40-41 (1981). Reviewer: J.Lorenz MSC: 47B20 47B10 PDFBibTeX XMLCite \textit{W. Gong}, An. Univ. Craiova, Ser. Mat. Fiz.-Chim. 9, 40--41 (1981; Zbl 0638.47021)
Prasanna, Shanti; Sheth, I. H. Role of compactness in normality conditions for operators. (English) Zbl 0635.47026 J. Indian Math. Soc., New Ser. 45(1984), 181-192 (1981). MSC: 47B20 47B06 47B15 PDFBibTeX XMLCite \textit{S. Prasanna} and \textit{I. H. Sheth}, J. Indian Math. Soc., New Ser. 45, 181--192 (1981; Zbl 0635.47026)
Ivanovski, Novak On a problem of a subnormal extension of operator valued weighted shifts. (English) Zbl 0589.47036 God. Zb., Mat. Fak. Univ. Kiril Metodij Skopje 32, 37-40 (1981). Reviewer: T.Nakazi MSC: 47B37 47B20 PDFBibTeX XMLCite \textit{N. Ivanovski}, God. Zb., Mat. Fak. Univ. Kiril Metodij Skopje 32, 37--40 (1981; Zbl 0589.47036)
Xia, Daoxing On the Toeplitz operator related to the scattering operator of a semi- hyponormal operator. (English) Zbl 0589.47025 Acta Math. Sci. 1, 77-82 (1981). Reviewer: R.Olin MSC: 47B35 47B20 47A40 PDFBibTeX XMLCite \textit{D. Xia}, Acta Math. Sci. 1, 77--82 (1981; Zbl 0589.47025)
Putnam, C. R. Absolute continuity of polar factors of hyponormal operators. (English) Zbl 0572.47014 Contributions to analysis and geometry, Suppl. Am. J. Math., 277-283 (1981). MSC: 47B20 PDFBibTeX XML
Li, Shaokuan A subclass of the hyponormal operators - the complete hyponormal operators. (Chinese) Zbl 0566.47014 Fudan J., Nat. Sci. 20, 229-232 (1981). MSC: 47B20 PDFBibTeX XMLCite \textit{S. Li}, Fudan J., Nat. Sci. 20, 229--232 (1981; Zbl 0566.47014)
Wang, Baiying; Xia, Daoxing An inequality for the sum of eigenvalues of Hermitian matrices and its application. (Chinese. English summary) Zbl 0566.15014 Fudan J., Nat. Sci. 20, 419-423 (1981). MSC: 15A42 47B20 PDFBibTeX XMLCite \textit{B. Wang} and \textit{D. Xia}, Fudan J., Nat. Sci. 20, 419--423 (1981; Zbl 0566.15014)
Xia, Daoxing; Li, Shaokuan On functional transformation of hyponormal operators. (English) Zbl 0554.47007 Kexue Tongbao, Foreign Lang. Ed. 26, 1-4 (1981). Reviewer: R.Olin MSC: 47B20 47A60 45P05 PDFBibTeX XMLCite \textit{D. Xia} and \textit{S. Li}, Kexue Tongbao, Sci. Bull. 26, 1--4 (1981; Zbl 0554.47007)
Carey, Richard W.; Pincus, Joel D. An integrality theorem for subnormal operators. (English) Zbl 0516.47013 Integral Equations Oper. Theory 4, 10-44 (1981). MSC: 47B20 47A15 PDFBibTeX XMLCite \textit{R. W. Carey} and \textit{J. D. Pincus}, Integral Equations Oper. Theory 4, 10--44 (1981; Zbl 0516.47013) Full Text: DOI
Voiculescu, Dan Remarks on Hilbert-Schmidt perturbations of almost-normal operators. (English) Zbl 0505.47012 Topics in modern operator theory, 5th int. Conf., Timisoara and Herculane/Romania 1980, 311-318 (1981). MSC: 47B10 47B20 47A55 PDFBibTeX XML
Li, Shaokuan On an inequality of semi-hyponormal operator spectrum. (English) Zbl 0503.47022 Kexue Tongbao, Foreign. Lang. Ed. 26, 293-296 (1981). MSC: 47B20 47A30 PDFBibTeX XMLCite \textit{S. Li}, Kexue Tongbao, Sci. Bull. 26, 293--296 (1981; Zbl 0503.47022)
Arora, S. C.; Kumar, Ramesh M-paranormal operators. (English) Zbl 0502.47012 Publ. Inst. Math., Nouv. Sér. 29(43), 5-13 (1981). MSC: 47B20 47B44 PDFBibTeX XMLCite \textit{S. C. Arora} and \textit{R. Kumar}, Publ. Inst. Math., Nouv. Sér. 29(43), 5--13 (1981; Zbl 0502.47012) Full Text: EuDML
Erovenko, V. A. Algebraically defined non-hyponormal operators. (Russian) Zbl 0496.47022 Vestn. Beloruss. Gos. Univ. Im. V. I. Lenina, Ser. I 1981, No. 2, 48-50 (1981). MSC: 47B20 PDFBibTeX XMLCite \textit{V. A. Erovenko}, Vestn. Beloruss. Gos. Univ. Im. V. I. Lenina, Ser. I 1981, No. 2, 48--50 (1981; Zbl 0496.47022)
Karakhanyan, M. I. An asymptotic variant of Fuglede-Putnam theorem on commutators of linear bounded operators in strong and weak operator topologies. (Russian) Zbl 0487.47029 Dokl. Akad. Nauk Arm. SSR 73, 265-268 (1981). MSC: 47B47 47B20 PDFBibTeX XMLCite \textit{M. I. Karakhanyan}, Dokl., Akad. Nauk Arm. SSR 73, 265--268 (1981; Zbl 0487.47029)
Fujii, Masatoshi; Prasanna, Shanti Translatable radii for operators. (English) Zbl 0487.47007 Math. Jap. 26, 653-657 (1981). MSC: 47A30 47A10 47A12 47B20 47B15 PDFBibTeX XMLCite \textit{M. Fujii} and \textit{S. Prasanna}, Math. Japon. 26, 653--657 (1981; Zbl 0487.47007)
Rhoades, B. E. Generalized Hausdorff matrices bounded on \(l^ p\) and c. (English) Zbl 0487.40003 Acta Sci. Math. 43, 333-345 (1981). MSC: 40G05 47A30 40C05 47B20 PDFBibTeX XMLCite \textit{B. E. Rhoades}, Acta Sci. Math. 43, 333--345 (1981; Zbl 0487.40003)
Hastings, William W. The approximate point spectrum of a subnormal operator. (English) Zbl 0484.47010 J. Oper. Theory 5, 119-126 (1981). MSC: 47B20 47A15 47A10 PDFBibTeX XMLCite \textit{W. W. Hastings}, J. Oper. Theory 5, 119--126 (1981; Zbl 0484.47010)
Embry-Wardrop, Mary Quasinormal extensions of subnormal operators. (English) Zbl 0479.47020 Houston J. Math. 7, 191-204 (1981). MSC: 47B20 PDFBibTeX XMLCite \textit{M. Embry-Wardrop}, Houston J. Math. 7, 191--204 (1981; Zbl 0479.47020)
Moore, R. L.; Rogers, D. D.; Trent, Tavan T. A note on intertwining M-hyponormal operators. (English) Zbl 0479.47019 Proc. Am. Math. Soc. 83, 514-516 (1981). MSC: 47B20 47B15 PDFBibTeX XMLCite \textit{R. L. Moore} et al., Proc. Am. Math. Soc. 83, 514--516 (1981; Zbl 0479.47019) Full Text: DOI
Apostol, Constantin The spectral flavour of Scott Brown’s techniques. (English) Zbl 0479.47003 J. Oper. Theory 6, 3-12 (1981). MSC: 47A15 47B20 PDFBibTeX XMLCite \textit{C. Apostol}, J. Oper. Theory 6, 3--12 (1981; Zbl 0479.47003)
Xia, Daoxing On the spectrum of hyponormal or semihyponormal operators. (English) Zbl 0477.47019 J. Oper. Theory 5, 257-266 (1981). MSC: 47B20 47A10 PDFBibTeX XMLCite \textit{D. Xia}, J. Oper. Theory 5, 257--266 (1981; Zbl 0477.47019)
Stampfli, J. G. Quasisimilarity of operators. (English) Zbl 0477.47002 Proc. R. Ir. Acad., Sect. A 81, 109-119 (1981). MSC: 47A10 47B20 47B37 PDFBibTeX XMLCite \textit{J. G. Stampfli}, Proc. R. Ir. Acad., Sect. A 81, 109--119 (1981; Zbl 0477.47002)
Curto, Raul E. Spectral inclusion for doubly commuting subnormal n-tuples. (English) Zbl 0476.47017 Proc. Am. Math. Soc. 83, 730-734 (1981). MSC: 47B20 47A20 47A62 PDFBibTeX XMLCite \textit{R. E. Curto}, Proc. Am. Math. Soc. 83, 730--734 (1981; Zbl 0476.47017) Full Text: DOI
Williams, L. R. Quasisimilarity and hyponormal operators. (English) Zbl 0476.47016 J. Oper. Theory 5, 127-139 (1981). MSC: 47B20 47A66 47A10 PDFBibTeX XMLCite \textit{L. R. Williams}, J. Oper. Theory 5, 127--139 (1981; Zbl 0476.47016)
Conway, John B. Subnormal operators. (English) Zbl 0474.47013 Research Notes in Mathematics, 51. Boston - London - Melbourne: Pitman Advanced Publishing Program. XVII, 476 p. £15.75 (1981). MSC: 47B20 47-02 PDFBibTeX XML
Berger, Charles A. Intertwined operators and the Pincus principal function. (English) Zbl 0473.47006 Integral Equations Oper. Theory 4, 1-9 (1981). MSC: 47A15 47B20 47B47 PDFBibTeX XMLCite \textit{C. A. Berger}, Integral Equations Oper. Theory 4, 1--9 (1981; Zbl 0473.47006) Full Text: DOI
Pandya, Madhavi; Sheth, I. H. Boundary spectra of certain operators on Hilbert space. (English) Zbl 0473.47003 Math. Jap. 26, 419-420 (1981). MSC: 47A12 47A10 47B20 PDFBibTeX XMLCite \textit{M. Pandya} and \textit{I. H. Sheth}, Math. Japon. 26, 419--420 (1981; Zbl 0473.47003)
Li, Shaokuan Some results about semi-hyponormal operators. (Chinese) Zbl 0472.47017 Chin. Ann. Math. 2, 319-324 (1981). MSC: 47B20 PDFBibTeX XMLCite \textit{S. Li}, Chin. Ann. Math. 2, 319--324 (1981; Zbl 0472.47017)
Takahashi, Katsutoshi On the converse of the Fuglede-Putnam theorem. (English) Zbl 0472.47013 Acta Sci. Math. 43, 123-125 (1981). MSC: 47B15 47B20 PDFBibTeX XMLCite \textit{K. Takahashi}, Acta Sci. Math. 43, 123--125 (1981; Zbl 0472.47013)
Cioranescu, Ioana On distribution semi-groups of subnormal operators. (English) Zbl 0471.47022 J. Oper. Theory 5, 47-52 (1981). MSC: 47D03 47B20 PDFBibTeX XMLCite \textit{I. Cioranescu}, J. Oper. Theory 5, 47--52 (1981; Zbl 0471.47022)
Trent, Tavan T. New conditions for subnormality. (English) Zbl 0471.47015 Pac. J. Math. 93, 459-464 (1981). MSC: 47B20 47B15 PDFBibTeX XMLCite \textit{T. T. Trent}, Pac. J. Math. 93, 459--464 (1981; Zbl 0471.47015) Full Text: DOI
Xia, Daoxing Spectral mapping of hyponormal or semi-hyponormal operators. (English) Zbl 0471.47013 J. Math. Anal. Appl. 79, 409-427 (1981). MSC: 47B20 47A60 47Gxx PDFBibTeX XMLCite \textit{D. Xia}, J. Math. Anal. Appl. 79, 409--427 (1981; Zbl 0471.47013) Full Text: DOI
Conway, John B. The dual of a subnormal operator. (English) Zbl 0469.47020 J. Oper. Theory 5, 195-211 (1981). MSC: 47B20 47A05 PDFBibTeX XMLCite \textit{J. B. Conway}, J. Oper. Theory 5, 195--211 (1981; Zbl 0469.47020)
Patel, A. B.; Ramanujan, P. B. On sum and product of normal operators. (English) Zbl 0469.47019 Indian J. Pure Appl. Math. 12, 1213-1218 (1981). MSC: 47B15 47B20 PDFBibTeX XMLCite \textit{A. B. Patel} and \textit{P. B. Ramanujan}, Indian J. Pure Appl. Math. 12, 1213--1218 (1981; Zbl 0469.47019)
Gupta, B. C.; Ramanujan, P. B. On k-quasihyponormal operators. II. (English) Zbl 0463.47020 Bull. Aust. Math. Soc. 24, 61-67 (1981). MSC: 47B20 47B10 47A10 PDFBibTeX XMLCite \textit{B. C. Gupta} and \textit{P. B. Ramanujan}, Bull. Aust. Math. Soc. 24, 61--67 (1981; Zbl 0463.47020) Full Text: DOI
Putnam, C. R. Absolute continuity and hyponormal operators. (English) Zbl 0463.47019 Int. J. Math. Math. Sci. 4, 321-335 (1981). MSC: 47B20 28A10 47B47 47B15 26A46 47A35 47A55 PDFBibTeX XMLCite \textit{C. R. Putnam}, Int. J. Math. Math. Sci. 4, 321--335 (1981; Zbl 0463.47019) Full Text: DOI EuDML
Keough, Gerard E. Subnormal operators, Toeplitz operators and spectral inclusion. (English) Zbl 0461.47012 Trans. Am. Math. Soc. 263, 125-135 (1981). MSC: 47B20 47B35 47A10 47A20 PDFBibTeX XMLCite \textit{G. E. Keough}, Trans. Am. Math. Soc. 263, 125--135 (1981; Zbl 0461.47012) Full Text: DOI
Glazerman Ben-Jacob, Marion Hyponormal operators compact relative to a W*-algebra. (English) Zbl 0461.47011 Bull. Lond. Math. Soc. 13, 229-230 (1981). MSC: 47B20 47C15 47B47 PDFBibTeX XMLCite \textit{M. Glazerman Ben-Jacob}, Bull. Lond. Math. Soc. 13, 229--230 (1981; Zbl 0461.47011) Full Text: DOI
Moore, R. L.; Trent, Tavan T. A strict maximum modulus theorem for certain Banach spaces. (English) Zbl 0458.47021 Monatsh. Math. 92, 197-201 (1981). MSC: 47B20 47B10 30C80 PDFBibTeX XMLCite \textit{R. L. Moore} and \textit{T. T. Trent}, Monatsh. Math. 92, 197--201 (1981; Zbl 0458.47021) Full Text: DOI EuDML
Furuta, Takayuki An extension of the Fuglede-Putnam theorem to subnormal operators using a Hilbert-Schmidt norm inequality. (English) Zbl 0458.47020 Proc. Am. Math. Soc. 81, 240-242 (1981). MSC: 47B20 47B10 47B15 47B47 PDFBibTeX XMLCite \textit{T. Furuta}, Proc. Am. Math. Soc. 81, 240--242 (1981; Zbl 0458.47020) Full Text: DOI
Beauzamy, B. Sous-espaces invariants dans les espaces de Banach. (French) Zbl 0458.47002 Sémin. Bourbaki, 32e année, Vol. 1979/80, Exp. 549, Lect. Notes Math. 842, 95-111 (1981). MSC: 47A15 47B20 47B15 PDFBibTeX XML Full Text: Numdam EuDML
Istratescu, Vasile I. Introduction to linear operator theory. (English) Zbl 0457.47001 Pure and Applied Mathematics, 65. New York, Basel: Marcel Dekker, Inc. XI, 579 p. SFr. 88.00 (1981). MSC: 47A05 47-02 47A12 47B20 46H05 47B25 47D03 47A35 PDFBibTeX XML
Pincus, Joel D.; Xia, Daoxing Mosaic and principal function of hyponormal and semi-hyponormal operators. (English) Zbl 0452.47027 Integral Equations Oper. Theory 4, 134-150 (1981). MSC: 47B20 PDFBibTeX XMLCite \textit{J. D. Pincus} and \textit{D. Xia}, Integral Equations Oper. Theory 4, 134--150 (1981; Zbl 0452.47027) Full Text: DOI
De Barra, G. The boundary of the numerical range. (English) Zbl 0452.47004 Glasg. Math. J. 22, 69-72 (1981). MSC: 47A10 47B20 PDFBibTeX XMLCite \textit{G. De Barra}, Glasg. Math. J. 22, 69--72 (1981; Zbl 0452.47004) Full Text: DOI
Goya, Eitoku; Saito, Teishiro On intertwining by an operator having a dense range. (English) Zbl 0443.47023 Tohoku Math. J., II. Ser. 33, 127-131 (1981). MSC: 47B20 47A15 PDFBibTeX XMLCite \textit{E. Goya} and \textit{T. Saito}, Tôhoku Math. J. (2) 33, 127--131 (1981; Zbl 0443.47023) Full Text: DOI
Wu, Pei Yuan On the quasi-similarity of hyponormal contractions. (English) Zbl 0443.47022 Ill. J. Math. 25, 498-503 (1981). MSC: 47B20 47A10 PDFBibTeX XMLCite \textit{P. Y. Wu}, Ill. J. Math. 25, 498--503 (1981; Zbl 0443.47022)
Furuta, Takayuki Essentially convexoid operators. (English) Zbl 0438.47004 Can. J. Math. 33, 257-274 (1981). MSC: 47A12 47B20 PDFBibTeX XMLCite \textit{T. Furuta}, Can. J. Math. 33, 257--274 (1981; Zbl 0438.47004) Full Text: DOI