Mikael Rørdam

Research output

Research output per year 1997 2000 2001 2007 2010 2011 2012 2013 2014 2015 2017 2019 2020

• 28 Journal article
• 1 Book chapter
• 1 Paper
• 1 Comment/debate
• 1 More
  • 1 Other contribution

Research output per year

Research output per year

Search results

• 2020

  Non-closure of Quantum Correlation Matrices and Factorizable Channels that Require Infinite Dimensional Ancilla (With an Appendix by Narutaka Ozawa)

  Musat, M. & Rørdam, M., 1 May 2020, In: Communications in Mathematical Physics. 16 p.

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

  • Correlation Matrix 100%
  • Finite Dimensional Algebra 91%
  • Von Neumann Algebra 88%
  • algebra 80%
  • Trace 45%
  6 Citations (Scopus)
• 2019

  Fixed-points in the cone of traces on a C*-algebra

  Rørdam, M., 2019, In: Transactions of the American Mathematical Society. 371, 12, p. 8879-8906 28 p.

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

  • Algebra 100%
  • Cones 90%
  • C*-algebra 88%
  • Trace 77%
  • Cone 76%
  1 Citation (Scopus)

  10 Downloads (Pure)

• Just-infinite C^∗-algebras and Their Invariants

  Rørdam, M., 18 Jun 2019, In: International Mathematics Research Notices. 2019, 12, p. 3621-3645 25 p.

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

  • Residually Finite 100%
  • Algebra 55%
  • Invariant 55%
  • Trace 40%
  • Diagram 32%
• 2018

  Just-infinite C*-algebras

  Grigorchuk, R., Musat, M. & Rordam, M., 2018, In: Commentarii Mathematici Helvetici. 93, 1, p. 157-201

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

  • C*-algebra 100%
  • Algebra 60%
  • Residually Finite 28%
  • Primitive Ideal 14%
  • Abstract algebra 14%
  6 Citations (Scopus)

  63 Downloads (Pure)
• 2017

  Axiomatizability of the stable rank of C*-algebras

  Farah, I. & Rørdam, M., 2017, In: Muenster Journal of Mathematics. 10, 2, p. 269-275

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

  • Stable Rank 100%
  • C*-algebra 69%
  • Ultrapower 35%
  • Logic 19%
  • Metric 16%
  6 Downloads (Pure)

• Relative commutants of strongly self-absorbing C*-algebras

  Farah, I., Hart, B., Rørdam, M. & Tikuisis, A., 1 Jan 2017, In: Selecta Mathematica. 23, 1, p. 363-387

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

  • Commutant 100%
  • Absorbing 94%
  • algebra 79%
  • C*-algebra 77%
  • Flip 57%
  6 Citations (Scopus)

  39 Downloads (Pure)
• 2016

  Uffe Haagerup–In Memoriam

  Connes, A., Jones, V., Musat, M. E. & Rørdam, M., 1 Jan 2016, In: Notices of the American Mathematical Society. 63, 1, p. 48-49

  Research output: Contribution to journal › Journal article › Communication
• 2015

  Elementary amenable groups are quasidiagonal

  Ozawa, N., Rordam, M. & Sato, Y., Feb 2015, In: Geometric and Functional Analysis. 25, 1, p. 307-316

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

  • Group C*-algebra 100%
  • Amenable Group 87%
  • C*-algebra 65%
  10 Citations (Scopus)

• Universal properties of group actions on locally compact spaces

  Matui, H. & Rørdam, M., 15 Jun 2015, In: Journal of Functional Analysis. 268, 12, p. 3601-3648

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

  • Locally Compact Space 100%
  • G-space 97%
  • Group Action 77%
  • Locally Compact 57%
  • Infinite Groups 42%
  4 Citations (Scopus)

• When central sequence C*-algebras have characters

  Kirchberg, E. & Rordam, M., 17 Jun 2015, In: International Journal of Mathematics. 26, 7, 1550049.

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

  • C*-algebra 100%
  • Character 83%
  • Algebra 60%
  • Unital 17%
  • Strong Regularity 12%
  3 Citations (Scopus)
• 2014

  Central sequence C^∗-algebras and tensorial absorption of the Jiang-Su algebra

  Kirchberg, E. & Rørdam, M., 1 Oct 2014, In: Journal fuer die Reine und Angewandte Mathematik. 695, p. 175-214

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

  • Absorption 100%
  • Algebra 97%
  • Trace 28%
  • Unital 22%
  • Extremes 21%
  43 Citations (Scopus)

• Erratum to Central sequence C*-algebras and tensorial absorption of the Jiang–Su algebra: (J. reine angew. Math. 695 (2014), 175–214)

  Kirchberg, E. & Rørdam, M., 2014, In: Journal fuer die Reine und Angewandte Mathematik. 695, p. 215-216

  Research output: Contribution to journal › Comment/debate › Research › peer-review
• 2013

  Correction of Proofs in "Purely Infinite Simple C*-algebras Arising from Free Product Constructions'' and a Subsequent Paper

  Ara, P., Dykema, K. J. & Rørdam, M., 2013, In: Canadian Journal of Mathematics - Journal Canadien de Mathématiques. 65, p. 481-484

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

• Divisibility properties for C*-algebras

  Robert, L. & Rørdam, M., Jun 2013, In: Proceedings of the London Mathematical Society. 106, 6, p. 1330-1370

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

  10 Citations (Scopus)

• Non-Supramenable Groups Acting on Locally Compact Spaces

  Kellerhals, J., Monod, N. & Rørdam, M., 2013, In: Documenta Mathematica. 18, p. 1597-1626

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

  • Locally Compact Space 100%
  • Crossed Product 56%
  • Amenable Group 31%
  • Invariant Measure 24%
  • C*-algebra 23%
  15 Citations (Scopus)
• 2012

  Purely infinite C*-algebras arising from crossed products

  Rørdam, M. & Sierakowski, A., Feb 2012, In: Ergodic Theory and Dynamical Systems. 32, p. 273-293 21 p.

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

  • Crossed Product 100%
  • Algebra 93%
  • C*-algebra 82%
  • Cantor set 24%
  • Countable 18%
  47 Citations (Scopus)

• The Corona Factorization property, Stability, and the Cuntz semigroup of a C*-algebra

  Ortega Esparza, E., Perera, F. & Rørdam, M., 1 Jan 2012, In: International Mathematics Research Notices. 2012, 1, p. 34-66 33 p.

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

  • Corona 100%
  • C*-algebra 75%
  • Factorization 67%
  • Semigroup 61%
  • Unital 26%
  23 Citations (Scopus)
• 2011

  The Corona Factorization Property and Refinement Monoids

  Ortega Esparza, E., Perera, F. & Rørdam, M., 19 Apr 2011, In: Transactions of the American Mathematical Society. 363, 9, p. 4505-4525 21 p.

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

  • Corona 100%
  • Algebra 85%
  • Factorization 81%
  • Monoid 75%
  • Refinement 71%
  15 Citations (Scopus)

• The Cuntz semigroup and comparison of open projections

  Ortega, E., Rørdam, M. & Thiel, H., 15 Jun 2011, In: Journal of Functional Analysis. 260, 12, p. 3474-3493 20 p.

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

  • Semigroup 100%
  • Projection 98%
  • C*-algebra 41%
  32 Citations (Scopus)
• 2010

  Endomorphisms of O_n which preserve the canonical UHF-subalgebra

  Rørdam, M., Szymanski, W. & Conti, R., Aug 2010, In: Journal of Functional Analysis. 259, p. 602-617 16 p.

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

  • Endomorphism 100%
  • Subalgebra 89%
  • Unital 68%
  • Cuntz Algebra 46%
  • Commutant 41%
  17 Citations (Scopus)

• Samfundets bevågenhed - universiteternes ansvarlighed - Hvad kan forskerne, universiteterne og forskningsrådene selv gøre? Forskningspolitisk årsmøde 2010

  Harder, P., Bache, C., Flensted-Jensen, M., Rørdam, M. & Smith, N., 2010, 47 p. Copenhagen : Det Kongelige Danske Videnskabernes Selskab.

  Research output: Other contribution › Communication

• The Jiang-Su algebra revisited

  Rørdam, M. & Winter, W., May 2010, In: Journal fur die Reine und Angewandte Mathematik. 642, p. 129-155 26 p.

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

  • Algebra 100%
  • C*-algebra 88%
  • Stable Rank 64%
  • Unital 47%
  • Divisibility 27%
  68 Citations (Scopus)
• 2009

  Strongly self-absorbing C*-algebras which contain a non-trivial projection

  Rørdam, M. & Dadarlat, M., 2009, In: Münster Journal of Mathematics. 2, p. 35-44 10 p.

  Research output: Contribution to journal › Journal article › Research › peer-review
• 2008

  Properly infinite C(X)-algebras and K_1-injectivity

  Rørdam, M., Rohde, R. & Blanchard, E., 2008, In: Journal of Noncommutative Geometry. 2, 3, p. 263-282 20 p.

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

  7 Citations (Scopus)
• 2007

   C_0(X)-algebras, stability and strongly self-absorbing C*-algebras

  Hirshberg, I., Rørdam, M. & Winter, W., 2007, In: Mathematische Annalen. 339, p. 695-732 38 p.

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

  47 Citations (Scopus)

• Purely infinite C*-algebras of real rank zero

  Pasnicu, C. & Rørdam, M., 2007, In: Journal fur die Reine und Angewandte Mathematik. 613, p. 51-73 23 p.

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

  35 Citations (Scopus)

• Structure and classification of C*-algebras

  Rørdam, M., 2007. 18 p.

  Research output: Contribution to conference › Paper › Research
• 2001

  Approximation with normal operators with finite spectrum, and an elementary proof of a Brown-Douglas-Fillmore theorem

  Friis, P. & Rørdam, M., 2001, In: Pacific Journal of Mathematics. 199, p. 347-366

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

  4 Citations (Scopus)

• Extensions of stable C*-algebras

  Rørdam, M., 2001, In: Documenta Mathematica. 6, p. 241-246

  Research output: Contribution to journal › Journal article › Research › peer-review
• 2000

  Non-simple purely infinite C*-algebras

  Kirchberg, E. & Rørdam, M., 2000, In: American Journal of Mathematics. 122, p. 637-666

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

  136 Citations (Scopus)

• Projections in free product C*-algebras, II

  Dykema, K. & Rørdam, M., 2000, In: Mathematische Zeitschrift. 234, p. 103-113

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

  5 Citations (Scopus)
• 1997

  AF-algebras

  Rørdam, M., 1997, Encyclopaedia of Mathematics Supplement I. Kluwer Law International, p. 37-38

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