Chr Ulrik Jensen

Chr Ulrik Jensen

Emeritus

ORCID: 0000-0001-9968-8463

Publication year:
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1 - 72 out of 72Page size: 500
  1. 2019
  2. Published

    Almost slender rings and compact rings

    Jensen, Chr Ulrik, Jøndrup, Søren & Thorup, Anders, 1 May 2019, In: Journal of Pure and Applied Algebra. 223, 5, p. 1869-1896

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. 2017
  4. Published

    Slender domains and compact domains

    Jensen, Chr Ulrik, Jøndrup, Søren & Thorup, Anders, Jul 2017, In: Forum Mathematicum. 29, 4, p. 893-904 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  5. 2015
  6. Published

    Gorenstein orders

    Jensen, Chr Ulrik & Thorup, Anders, 2015, In: Journal of Pure and Applied Algebra. 219, 3, p. 551-562 12 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. 2011
  8. Published

    The inverse Problem of Galois Theory

    Jensen, Chr Ulrik, 2011, In: Normat. 59, 3-4, p. 131-143

    Research output: Contribution to journal › Journal article › Research › peer-review

  9. 2010
  10. Published

    Some field theoretic properties and an application concerning transcendental numbers

    Jensen, Chr Ulrik & Marques, D., 2010, In: Journal of Algebra and its Applications. 9, 3, p. 493-500 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  11. 2008
  12. Published

    Variations on Whitehead's problem and the structure of Ext

    Jensen, Chr Ulrik, 2008, Models, Modules and Abelian Groups: In Memory of A. L. S. Corner. Goebel, R. & Goldsmith, B. (eds.). p. 407-415 9 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  13. 2007
  14. Published

    Embeddability of quadratic extensions in cyclic extensions

    Geyer, W. & Jensen, Chr Ulrik, 2007, In: Forum Mathematicum. 19, 4, p. 707-725

    Research output: Contribution to journal › Journal article › Research › peer-review

  15. 2006
  16. Published

    Some remarks on Hilbertian fields: (An appendix to the paper “Galois averages” by R. Massy

    Jensen, Chr Ulrik & Massy, R., 2006, In: Journal of Number Theory. 120, 2, p. 229-233 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  17. 2004
  18. Published

    On the number of real roots of a solvable polynomial

    Jensen, Chr Ulrik, 2004, In: Acta Arithmetica. 115, p. 255-263

    Research output: Contribution to journal › Journal article › Research › peer-review

  19. Published

    Solvability by Real Radicals and Fermat Primes

    Jensen, Chr Ulrik, 2004, In: Canadian Mathematical Bulletin. 47, p. 229-236

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. 2003
  21. Published

    A remark on real radical extensions

    Jensen, Chr Ulrik, 2003, In: Acta Arithmetica. 107, 4, p. 373-379 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  22. 2002
  23. Published

    Generic polynomials: Constructive Aspects of the Inverse Galois Problem

    Jensen, Chr Ulrik, Ledet, A. & Yui, N., 2002, Cambridge: Cambridge University Press. (MSRI Publications, Vol. 45).

    Research output: Book/Report › Book › Research › peer-review

  24. 1999
  25. Published

    How often can a finite group be realized as a Galois group over a field?

    Jensen, Chr Ulrik & Prestel, A., 1999, In: Manuscripta Mathematica. 99, 2, p. 223-247 25 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  26. 1997
  27. Published

    Elementary questions in Galois theory

    Jensen, Chr Ulrik, 1997, Advances in algebra and model theory: Selected surveys presented at conferences in Essen 1994 and Dresden 1995. Gordon and Breach, Amsterdam, p. 11-24 14 p. (Algebra, Logic and Applications, Vol. 9).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  28. 1996
  29. Published

    Finitely generated pro-p-groups as Galois groups of maximalp-extensions of function fields over ℚ q

    Jensen, Chr Ulrik & Prestel, A., 1996, In: Manuscripta Mathematica. 90, 2, p. 225-238 14 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  30. Published

    Prodihedral groups as Galois groups over number fields

    Geyer, W. & Jensen, Chr Ulrik, 1996, In: Journal of Number Theory. 60, 2, p. 332-372 41 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  31. 1994
  32. Published

    Extensions prodiédrales

    Geyer, W. & Jensen, Chr Ulrik, 1994, In: Comptes Rendus de l'Académie des Sciences - Series I - Mathematics. 319, 12, p. 1241-1244 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  33. Published

    Realization of finitely generated profinite groups by maximal abelian extensions of fields

    Jensen, Chr Ulrik & Prestel, A., 1994, In: Journal fuer die Reine und Angewandte Mathematik. 447, p. 201-218 18 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  34. 1992
  35. Published

    Finite Groups as Galois Groups over Arbitrary Fields

    Jensen, Chr Ulrik, 1992, In: Contemporary Mathematics. 131, 2, p. 435-448

    Research output: Contribution to journal › Journal article › Research › peer-review

  36. Published

    Unique realizability of finite abelian 2-groups as Galois groups

    Jensen, Chr Ulrik & Prestel, A., 1992, In: Journal of Number Theory. 40, 1, p. 12-31 20 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  37. 1989
  38. Published

    Algebraic compactness of ultrapowers and representation type

    Jensen, Chr Ulrik & Zimmermann-Huisgen, B., 1989, In: Pacific Journal of Mathematics. 139, 2, p. 251-265 15 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  39. Published

    Model-theoretic algebra with particular emphasis on fields, rings, modules

    Jensen, Chr Ulrik & Lenzing, H., 1989, Gordon and Breach Science Publishers, New York. (Algebra, Logic and Applications, Vol. 2).

    Research output: Book/Report › Book › Research › peer-review

  40. Published

    On the representations of a group as a Galois group over an arbitrary field

    Jensen, Chr Ulrik, 1989, Théorie des nombres (Quebec, PQ, 1987). De Gruyter, p. 441-458 18 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  41. 1988
  42. Published

    Quaternion extensions

    Jensen, Chr Ulrik & Yui, N., 1988, Algebraic geometry and commutative algebra, Vol. I. Kinokuniya, Tokyo, p. 155-182 28 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  43. 1986
  44. Published

    On the general inverse problem of Galois theory

    Jensen, Chr Ulrik, 1986, In: Mathematical Reports of the Academy of Science. 8, 2, p. 145-149 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  45. Published

    Polynomials with Frobenius groups of prime degree as Galois groups. II

    Bruen, A. A., Jensen, Chr Ulrik & Yui, N., 1986, In: Journal of Number Theory. 24, 3, p. 305-359 55 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  46. 1985
  47. Published

    Polynomials with Frobenius groups of prime degree as Galois groups

    Bruen, A. A., Jensen, Chr Ulrik & Yui, N., 1985, In: Mathematical Reports of the Academy of Science. 7, 3, p. 171-175 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  48. Published

    Some curiosities of rings of analytic functions

    Jensen, Chr Ulrik, 1985, In: Journal of Pure and Applied Algebra. 38, 2-3, p. 277-283 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  49. 1984
  50. Published

    Théorie des modèles pour des anneaux de fonctions entières et des corps de fonctions méromorphes

    Jensen, Chr Ulrik, 1984, In: Mém. Soc. Math. France (N.S.). 16, p. 23-40 18 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  51. 1983
  52. Published

    Algebraic compactness of reduced products and applications to pure global dimension

    Jensen, Chr Ulrik & Lenzing, H., 1983, In: Communications in Algebra. 11, 3, p. 305-325 21 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  53. Published

    L'indécidabilité d'une classe de corps des fonctions méromorphes

    Jensen, Chr Ulrik, 1983, In: Mathematical Reports of the Academy of Science. 5, 2, p. 69-74 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  54. 1982
  55. Published

    Homological dimension and representation type of algebras under base field extension

    Jensen, Chr Ulrik & Lenzing, H., 1982, In: Manuscripta Mathematica. 39, 1, p. 1-13 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  56. Published

    La dimension globale de l'anneau des fonctions entières

    Jensen, Chr Ulrik, 1982, In: C. R. Acad. Sci. Paris Sér. I Math.. 294, 12, p. 385-386 2 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  57. Published

    Polynomials with Dp as Galois group

    Jensen, Chr Ulrik & Yui, N., 1982, In: Journal of Number Theory. 15, 3, p. 347-375 29 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  58. Published

    Sur une classe de corps indécidables

    Jensen, Chr Ulrik, 1982, In: C. R. Acad. Sci. Paris Sér. I Math.. 295, 9, p. 507-509 3 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  59. 1981
  60. Published

    Applications of model theory to representations of finite-dimensional algebras

    Herrmann, C., Jensen, Chr Ulrik & Lenzing, H., 1981, In: Mathematische Zeitschrift. 178, 1, p. 83-98 16 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  61. Published

    Dimensions cohomologiques reliées aux foncteurs $(i)$

    Gruson, L. & Jensen, Chr Ulrik, 1981, Paul Dubreil and Marie-Paule Malliavin Algebra Seminar, 33rd Year (Paris, 1980). Springer, Vol. 867. p. 234-294 61 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  62. 1980
  63. Published

    Applications logiques en théorie des anneaux et des modules

    Jensen, Chr Ulrik, 1980, Algebra Colloquium (Rennes, 1980). Univ. Rennes, Rennes, p. 29-37 9 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  64. Published

    Model theory and representations of algebras

    Jensen, Chr Ulrik & Lenzing, H., 1980, Representation theory, II (Proc. Second Internat. Conf., Carleton Univ., Ottawa, Ont., 1979). Springer, Vol. 832. p. 302-310 9 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  65. Published

    Peano rings of arbitrary global dimension

    Jensen, Chr Ulrik, 1980, In: Journal of the London Mathematical Society. 21, 1, p. 39-44 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  66. Published

    Polynomials with $D_5$ (resp. $A_5$) as Galois group

    Jensen, Chr Ulrik & Yui, N., 1980, In: Mathematical Reports of the Academy of Science. 2, 6, p. 297-302 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  67. Published

    Propriétés homologiques et logiques des anneaux de fonctions entières

    Jensen, Chr Ulrik, 1980, In: C. R. Acad. Sci. Paris Sér. I Math.. 291, 9, p. A515-A517

    Research output: Contribution to journal › Journal article › Research › peer-review

  68. 1979
  69. Published

    A remark on the multidimensional moment problem

    Berg, Christian, Christensen, J. P. R. & Jensen, Chr Ulrik, 1979, In: Mathematische Annalen. 243, 2, p. 163-169 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  70. Published

    On the axiomatizability of certain classes of modules

    Jensen, Chr Ulrik & Vámos, P., 1979, In: Mathematische Zeitschrift. 167, 3, p. 227-237 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  71. Published

    Purity and generalized chain conditions

    Jensen, Chr Ulrik & Simson, D., 1979, In: Journal of Pure and Applied Algebra. 14, 3, p. 297-305 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  72. 1977
  73. Published

    On the global dimension of the functor category (mod R, Ab)

    Jensen, Chr Ulrik, 1977, In: Journal of Pure and Applied Algebra. 11, 1-3, p. 45-51 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  74. Published

    Some remarks on valuations and subfields of given codimension in algebraically closed fields

    Jensen, Chr Ulrik, 1977, In: Publ. Math. Debrecen. 24, 3-4, p. 317-321 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  75. 1976
  76. Published

    Deux applications de la notion de L-dimension

    Gruson, L. & Jensen, Chr Ulrik, 1976, In: C. R. Acad. Sci. Paris Sér. I Math.. 282, 1, p. Aii, A23-A24

    Research output: Contribution to journal › Journal article › Research › peer-review

  77. 1973
  78. Published

    Centres and fixed-point rings of Artinian rings

    Jensen, Chr Ulrik & Jøndrup, Søren, 1973, In: Mathematische Zeitschrift. 130, p. 189-197 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  79. Published

    Modules algébriquement compacts et foncteurs (i)

    Gruson, L. & Jensen, Chr Ulrik, 1973, In: C. R. Acad. Sci. Paris Sér. I Math.. 276, p. A1651-A1653

    Research output: Contribution to journal › Journal article › Research › peer-review

  80. Published

    On the structure of $rm Ext_R^1(A,R)$

    Jensen, Chr Ulrik, 1973, Rings, modules and radicals (Proc. Colloq., Keszthely, 1971). North-Holland, Amsterdam, p. 215-226

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  81. 1972
  82. Published

    Les foncteurs dérivés de $ et leurs applications en théorie des modules

    Jensen, Chr Ulrik, 1972, Springer.

    Research output: Book/Report › Book › Research

  83. Published

    On Ext 1 R (A, R)  for torsion-free A 

    Jensen, Chr Ulrik, 1972, In: Bulletin of the American Mathematical Society. 78, 5, p. 831-834

    Research output: Contribution to journal › Journal article › Research › peer-review

  84. 1970
  85. Published

    Direct limits of semisimple rings

    Jensen, Chr Ulrik & Skornyakov, L. A., 1970, In: Matematicheskie Zametki . 7, 4, 461-468,.

    Research output: Contribution to journal › Journal article › Research › peer-review

  86. Published

    On the vanishing of (i)

    Jensen, Chr Ulrik, 1970, In: Journal of Algebra. 15, p. 151-166 16 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  87. 1969
  88. Published

    Some cardinality questions for flat modules and coherence

    Jensen, Chr Ulrik, 1969, In: Journal of Algebra. 12, p. 231-241 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  89. 1968
  90. Published

    Some remarks on a change of rings theorem

    Jensen, Chr Ulrik, 1968, In: Mathematische Zeitschrift. 106, p. 395-401 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  91. Published

    Sur le plongement d'un anneau dans un anneau héréditaire

    Jensen, Chr Ulrik, 1968, In: C. R. Acad. Sci. Paris. 267, p. A534–A535

    Research output: Contribution to journal › Journal article › Research › peer-review

  92. 1967
  93. Published

    Homological dimensions of $aleph _0-$coherent rings

    Jensen, Chr Ulrik, 1967, In: Mathematica Scandinavica. 20, p. 55-60 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  94. 1966
  95. Published

    A remark on flat and projective modules

    Jensen, Chr Ulrik, 1966, In: Canadian Journal of Mathematics - Journal Canadien de Mathématiques. 18, p. 943-949 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  96. Published

    A remark on semi-hereditary local rings

    Jensen, Chr Ulrik, 1966, In: Journal of the London Mathematical Society. 41, p. 479-482 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  97. Published

    A remark on the distributive law for an ideal in a commutative ring

    Jensen, Chr Ulrik, 1966, In: Proc. Glasgow Math. Assoc.. 7, p. 193-198 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  98. Published

    Arithmetical rings

    Jensen, Chr Ulrik, 1966, In: Acta Math. Acad. Sci. Hungar.. 17, p. 115-123 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  99. Published

    On homological dimensions of rings with countably generated ideals

    Jensen, Chr Ulrik, 1966, In: Mathematica Scandinavica. 18, p. 97-105 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  100. 1964
  101. Published

    A remark on arithmetical rings

    Jensen, Chr Ulrik, 1964, In: Proceedings of the American Mathematical Society. 15, p. 951-954 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  102. Published

    A remark on relative integral bases for infinite extensions of finite number fields

    Jensen, Chr Ulrik, 1964, In: Mathematika. 11, p. 64-66 3 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  103. 1963
  104. Published

    On characterizations of Prüfer rings

    Jensen, Chr Ulrik, 1963, In: Mathematica Scandinavica. 13, p. 90-98 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  105. Published

    Remark on a characterization of certain ring class fields by their absolute Galois group

    Jensen, Chr Ulrik, 1963, In: Proceedings of the American Mathematical Society. 14, p. 738-741 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  106. 1962
  107. Published

    On the Diophantine equation $xi ^2-2m^2eta ^2=-1$

    Jensen, Chr Ulrik, 1962, In: Mathematica Scandinavica. 11, p. 58-62 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  108. Published

    On the solvability of a certain class of non-Pellian equations

    Jensen, Chr Ulrik, 1962, In: Mathematica Scandinavica. 10, p. 71-84 14 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  109. Published

    Über eine Klasse nicht-Pellscher Gleichungen

    Jensen, Chr Ulrik, 1962, In: Journal fuer die Reine und Angewandte Mathematik. 209, p. 36-38 3 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  110. 1960
  111. Published

    Über die Führer einer Klasse Heckescher Grössencharaktere

    Jensen, Chr Ulrik, 1960, In: Mathematica Scandinavica. 8, p. 81-96 16 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

ID: 8958882