Kjeld Bagger Laursen
Emeritus
Department of Mathematical Sciences
Universitetsparken 5
2100 København Ø
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Tensor products of Banach algebras with involution
Laursen, Kjeld Bagger, 1969, In: Transactions of the American Mathematical Society. 136, p. 467-487Research output: Contribution to journal › Journal article › Research › peer-review
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Symmetry of generalized group algebras
Laursen, Kjeld Bagger, 1974, In: Proceedings of the American Mathematical Society. p. 318-322Research output: Contribution to journal › Journal article › Research › peer-review
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Spectral Subspaces and Automatic Continuity
Laursen, Kjeld Bagger, 1991, København: Eget forlag. 38 p.Research output: Book/Report › Doctoral thesis › Research
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Some remarks on the surjectivity spectrum of linear operators
Laursen, Kjeld Bagger & Vrbova, P., 1989, In: Czechoslovak Mathematical Journal. 39, 114Research output: Contribution to journal › Journal article › Research › peer-review
Some remarks on automatic continuity
Laursen, Kjeld Bagger, 1976, Springer Lecture Notes in Mathematics, vol. 512. Springer, Vol. 512. p. 96-108Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Reforming University Studies: How Well Does New Legislation Modify Entrenched Behaviour?
Laursen, Kjeld Bagger & Horst, Sebastian, 2009, University Science and Mathematics Education in Transition. Skovsmose, O., Valero, P. & Christensen, O. R. (eds.). Springer Science+Business Media, p. 223-239 17 p.Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Prime ideals and automatic continuity in algebras of differentiable functions
Laursen, Kjeld Bagger, 1980, In: Journal of Functional Analysis. 38, p. 16-24Research output: Contribution to journal › Journal article › Research › peer-review
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Operators with tacked spectrum
Laursen, Kjeld Bagger & Mbekhta, M., 1997, In: Mathematical Proceedings of the Royal Irish Academy. 97, p. 19-30Research output: Contribution to journal › Journal article › Research › peer-review
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Operators with finite chain length and the ergodic theorem
Laursen, Kjeld Bagger & Mbekhta, M., 1995, In: Proceedings of the American Mathematical Society. 123, p. 3443-3448Research output: Contribution to journal › Journal article › Research › peer-review
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Operators with finite ascent
Laursen, Kjeld Bagger, 1992, In: Pacific Journal of Mathematics. 152, p. 323-336Research output: Contribution to journal › Journal article › Research › peer-review
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On discontinuous homomorphisms of L1(G)
Laursen, Kjeld Bagger, 1972, In: Mathematica Scandinavica. 30, p. 263-266Research output: Contribution to journal › Journal article › Research › peer-review
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On analytic solutions of the equation (T-lambda) f(lambda) = x
Laursen, Kjeld Bagger & Neumann, M. M., 1994, In: Seminar Notes in Functional Analysis. p. 256-265Research output: Contribution to journal › Journal article › Research › peer-review
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On Riesz theory of multipliers in commutative Banach algebras
Laursen, Kjeld Bagger & Aiena, P., 1996, In: Mathematical Proceedings of the Royal Irish Academy. 96A, p. 184-193Research output: Contribution to journal › Journal article › Research › peer-review
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Om funktionalligninger
Laursen, Kjeld Bagger, 1993, Matematiske Ideer. København: Matematiklærerforeningen, p. 259Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Multipliers with natural local spectra on commutative Banach algebras
Laursen, Kjeld Bagger, Neumann, M. M. & Eschmeier, J., 1996, In: Journal of Functional Analysis. 138, p. 273-294Research output: Contribution to journal › Journal article › Research › peer-review
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Multipliers with closed range on regular commutative Banach algebras
Laursen, Kjeld Bagger & Aiena, P., 1994, In: Proceedings of the American Mathematical Society. 121, p. 1039-1048Research output: Contribution to journal › Journal article › Research › peer-review
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Multipliers of radical Banach algebras of power series
Laursen, Kjeld Bagger, Bade, W. G. & Dales, H. G., 1984, In: Memoirs of the American Mathematical Society. 49, 303Research output: Contribution to journal › Journal article › Research › peer-review
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Multipliers and local spectral theory
Laursen, Kjeld Bagger, 1994, Functional Analysis and Operator Theory. Warszawa: Banach Center, Polish Academy of Scienc., p. 223-236 (Banach Center Publications, Vol. 30).Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Mergelyan's theorem for vector-valued functions with an application to slice algebras
Laursen, Kjeld Bagger, Briem, E. & Pedersen, N. W., 1970, In: Studia Mathematica. 25Research output: Contribution to journal › Journal article › Research › peer-review
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Maximal two-sided ideals in tensor products of Banach algebras
Laursen, Kjeld Bagger, 1970, In: Proceedings of the American Mathematical Society. 25, p. 475-480Research output: Contribution to journal › Journal article › Research › peer-review
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Matematik og naturfagene i Ny Nordisk Skole
Horst, Sebastian, Dolin, Jens, Laursen, Kjeld Bagger, Andersen, H. M., Goldbech, O. & Kjeldsen, Tinne Hoff, 2012, In: MONA: Matematik og Naturfagsdidaktik. 4, p. 68-84 17 p.Research output: Contribution to journal › Journal article › Research
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Local spectral theory and spectral inclusions
Laursen, Kjeld Bagger & Neumann, M. M., 1994, In: Glasgow Mathematical Journal. 26, p. 331-343Research output: Contribution to journal › Journal article › Research › peer-review
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Local spectral properties of multipliers on Banach algebras
Laursen, Kjeld Bagger & Neumann, M. M., 1992, In: Archiv der Mathematik. 58, p. 368-375Research output: Contribution to journal › Journal article › Research › peer-review
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Local spectral properties of commutators
Laursen, Kjeld Bagger, Miller, V. G. & Neumann, M. M., 1995, In: Proceedings of the Edinburgh Mathematical Society. 38, 2, p. 313-329Research output: Contribution to journal › Journal article › Research › peer-review
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Lifting matrix units in C*-algebras II
Laursen, Kjeld Bagger & Sinclair, A. M., 1975, In: Mathematica Scandinavica. 37, p. 167-172Research output: Contribution to journal › Journal article › Research › peer-review
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Kan man kun differentiere på én måde?
Laursen, Kjeld Bagger, 1979, In: Normat - Nordisk Matematisk Tidsskrift. 27, p. 107-111Research output: Contribution to journal › Journal article › Research › peer-review
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It takes two, but sometimes one will do
Laursen, Kjeld Bagger, 1998, Rendiconti del Circolo Matematico di Palermo. Palermo, Sicilien, Italien: Circolo Matematico di Palermo, Vol. 56. p. 49-57Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Introduction to Banach Algebras, Operators, and Harmonic Analysis
Laursen, Kjeld Bagger, Dales, H. G., Aiena, P., Eschmeier, J. & Willis, G. A., 2003, Introduction to Banach Algebras, Operators, and Harmonic Analysis. Cambridge, p. 199-264 (London Mathematical Society Student Texts, Vol. 57).Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Intertwiners and automatic continuity
Laursen, Kjeld Bagger & Vrbova, P., 1991, In: Journal of the London Mathematical Society. 43, 2, p. 149-155Research output: Contribution to journal › Journal article › Research › peer-review
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Ideal structure of radical sequence algebras
Laursen, Kjeld Bagger, Bade, W. G. & Dales, H. G., 1983, Springer Lecture Notes in Mathematics. Springer, Vol. 975. p. 248-257Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Ideal structure in generalized group algebras
Laursen, Kjeld Bagger, 1969, In: Pacific Journal of Mathematics. 30, p. 155-174Research output: Contribution to journal › Journal article › Research › peer-review
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Gymnasiets drenge - matematikfagets drenge: Rapport fra et FoU-projekt - 126152
Bacher, C., Iversen, S. M., Laursen, Kjeld Bagger & Ulriksen, Lars, 29 Jun 2011, 40 p.Research output: Book/Report › Report › Research
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Forskningsbaseret undervisning - realiteter og potentialer: Proceedings fra d. 10. majkonference i naturvidenskabsdidaktik, København 18.-19. maj 2010
Christiansen, Frederik Voetmann (ed.), Horst, Sebastian (ed.), Holm, Christine (ed.) & Laursen, Kjeld Bagger (ed.), 2011, Department of Science Education, University of Copenhagen. 150 p. (IND's Skriftserie, Vol. 21).Research output: Book/Report › Anthology › Communication
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Essential spectra through local spectral theory
Laursen, Kjeld Bagger, 1997, In: Proceedings of the American Mathematical Society. 125, p. 1425-1434Research output: Contribution to journal › Journal article › Research › peer-review
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Equivalence of algebra norms on L1(G)
Laursen, Kjeld Bagger, 1972, In: Proceedings of the American Mathematical Society. 34, p. 316Research output: Contribution to journal › Journal article › Research › peer-review
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Epimorphisms of C*-algebras
Laursen, Kjeld Bagger, 1984, Functional Analysis: Surveys and Recent Results III. Bierstedt & Fuchssteiner (eds.). North-HollandResearch output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Dovne drenge eller dødbringende matematik?
Bacher, C., Laursen, Kjeld Bagger, Iversen, S. M. & Ulriksen, Lars, 10 Mar 2012, In: MONA: Matematik og Naturfagsdidaktik. 2012, 1, p. 23-45 23 p.Research output: Contribution to journal › Journal article › Research › peer-review
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Divisible subspaces and problems of automatic continuity
Laursen, Kjeld Bagger, Bade, W. G. & Curtis, P. C., 1980, In: Studia Mathematica. 68, p. 159-186Research output: Contribution to journal › Journal article › Research › peer-review
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Decomposable operators and automatic continuity
Laursen, Kjeld Bagger & Neumann, M. M., 1986, In: Journal of Operator Theory. 15, p. 33-51Research output: Contribution to journal › Journal article › Research › peer-review
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Decomposable multipliers and applications to harmonic analysis
Laursen, Kjeld Bagger & Neumann, M. M., 1992, In: Studia Mathematica. 101, 2, p. 193-214Research output: Contribution to journal › Journal article › Research › peer-review
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Continuity of linear maps from C*-algebras
Laursen, Kjeld Bagger, 1976, In: Pacific Journal of Mathematics. 61, p. 483-491Research output: Contribution to journal › Journal article › Research › peer-review
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Continuity of homomorphisms from C*-algebras into commutative Banach algebras
Laursen, Kjeld Bagger, 1987, In: Journal of the London Mathematical Society. 36, 2, p. 165-175Research output: Contribution to journal › Journal article › Research › peer-review
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Closed range multipliers and generalized inverses
Laursen, Kjeld Bagger & Mbekhta, M., 1993, In: Studia Mathematica. 107, p. 127-135Research output: Contribution to journal › Journal article › Research › peer-review
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Central factorization in C*-algebras and its use in automatic continuity
Laursen, Kjeld Bagger, 1984, In: Contemporary Mathematics. 32Research output: Contribution to journal › Journal article › Research › peer-review
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Central factorization in C*-algebras and continuity of homomorphisms
Laursen, Kjeld Bagger, 1983, In: Journal of the London Mathematical Society. 28, 2, p. 123-130Research output: Contribution to journal › Journal article › Research › peer-review
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Browder spectrum through local spectral theory
Laursen, Kjeld Bagger, 1998, Proceedings of the International Conference on Banach Algebras ba97. Berlin: De Gruyter, p. 287-301Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Automatic continuity of intertwining linear operators on Banach spaces
Laursen, Kjeld Bagger & Neumann, M. M., 1991, In: Rendiconti del Circolo Matematico di Palermo. 40, 3, p. 325-341Research output: Contribution to journal › Journal article › Research › peer-review
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Automatic continuity of intertwiners in Topological Vector Spaces
Laursen, Kjeld Bagger, 1992, Progress in Functional Analysis. Amsterdam: Aspen Publishers, p. XXVIII+431Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Automatic continuity of generalized intertwining operators
Laursen, Kjeld Bagger, 1981, In: Dissertationes Mathematicae. 189Research output: Contribution to journal › Journal article › Research › peer-review
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Automatic continuity in algebras of differentiable functions
Laursen, Kjeld Bagger, Bade, W. G. & Curtis, P. C., 1977, In: Mathematica Scandinavica. 40, p. 249-270Research output: Contribution to journal › Journal article › Research › peer-review
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Automatic continuity in Banach spaces and algebras
Laursen, Kjeld Bagger & Stein, Jr, J. D., 1973, In: American Journal of Mathematics. 95, p. 495-505Research output: Contribution to journal › Journal article › Research › peer-review
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Asymptotic intertwining and spectral inclusions on Banach spaces
Laursen, Kjeld Bagger & Neumann, M. M., 1993, In: Czechoslovak Mathematical Journal. 43(118), p. 483-497Research output: Contribution to journal › Journal article › Research › peer-review
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An Introduction to Local Spectral Theory
Laursen, Kjeld Bagger & Neumann, M. M., 2000, London Mathematical Society Monographs, New Series. Oxford: Clarendon Press, Vol. 20.Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research
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Algebraic spectral subspaces and automatic continuity
Laursen, Kjeld Bagger, 1988, In: Czechoslovak Mathematical Journal. 38, 113, p. 157-172Research output: Contribution to journal › Journal article › Research › peer-review
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A note on lifting of matrix units in C*-algebras
Laursen, Kjeld Bagger, 1973, In: Mathematica Scandinavica. 33, p. 338-342Research output: Contribution to journal › Journal article › Research › peer-review
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A characterization of reflexivity in Banach spaces
Laursen, Kjeld Bagger, 1965, In: Mathematica Scandinavica. 16, p. 169-174Research output: Contribution to journal › Journal article › Research › peer-review
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(D)ecomposa(B)ility, in Operator Theory and Banach Algebras, Conference Proceedings, Rabat (Morocco) April 1999
Laursen, Kjeld Bagger, 2003, (D)ecomposa(B)ility, in Operator Theory and Banch Algebras, Conference Proceedings, Rabat (Morocco), April 1999, Bucharest 2003. Theta, Bucharest, p. -Research output: Chapter in Book/Report/Conference proceeding › Report chapter › Research
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