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Research

Dr Yemon Choi

Senior Lecturer in Pure Mathematics

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  1. Weak amenability of Fourier algebras: old and new results

    Choi, Y. (Invited speaker)

    14/04/2014

    Activity: Talk or presentation types › Invited talk

  2. University of Delaware

    Choi, Y. (Visiting researcher)

    1/03/2020 → 11/03/2020

    Activity: Business or School/HEI Engagement › Visiting an external academic institution

  3. Unitarizable group representations and amenable operator algebras

    Choi, Y. (Invited speaker)

    28/05/2014

    Activity: Talk or presentation types › Invited talk

  4. Unitarizability, extensions, and amenable operator algebras

    Choi, Y. (Invited speaker)

    31/03/2022

    Activity: Talk or presentation types › Invited talk

  5. UK Operator Algebras Conference

    Choi, Y. (Participant)

    12/06/2024 → 14/06/2024

    Activity: Participating in or organising an event types › Participation in conference - Academic

  6. Twisted tensor products, and cocycles on Fourier algebras

    Choi, Y. (Invited speaker)

    26/06/2018

    Activity: Talk or presentation types › Invited talk

  7. The ZL-amenability constant of a finite group

    Choi, Y. (Invited speaker)

    11/03/2014

    Activity: Talk or presentation types › Invited talk

  8. The ZL-amenability constant of a finite group

    Choi, Y. (Invited speaker)

    1/05/2015

    Activity: Talk or presentation types › Invited talk

  9. Studia Mathematica (Journal)

    Choi, Y. (Peer reviewer)

    29/03/2017 → 28/09/2017

    Activity: Publication peer-review and editorial work types › Publication peer-review

  10. Studia Mathematica (Journal)

    Choi, Y. (Peer reviewer)

    28/05/2015 → 9/12/2015

    Activity: Publication peer-review and editorial work types › Publication peer-review

  11. Studia Mathematica (Journal)

    Choi, Y. (Peer reviewer)

    29/01/2016 → 10/07/2016

    Activity: Publication peer-review and editorial work types › Publication peer-review

  12. Some results on direct finiteness of group algebras

    Choi, Y. (Keynote speaker)

    23/05/2017

    Activity: Talk or presentation types › Invited talk

  13. Some operator algebras that are locally similar to self-adjoint ones

    Choi, Y. (Invited speaker)

    26/04/2016

    Activity: Talk or presentation types › Invited talk

  14. Semigroup Forum (Journal)

    Choi, Y. (Peer reviewer)

    9/06/2017 → 11/06/2018

    Activity: Publication peer-review and editorial work types › Publication peer-review

  15. Semigroup Forum (Journal)

    Choi, Y. (Peer reviewer)

    9/03/2014 → 17/11/2014

    Activity: Publication peer-review and editorial work types › Publication peer-review

  16. Quarterly Journal of Mathematics (Journal)

    Choi, Y. (Peer reviewer)

    22/04/2015 → 24/11/2015

    Activity: Publication peer-review and editorial work types › Publication peer-review

  17. Proceedings of the Royal Society of Edinburgh: Section A Mathematics (Journal)

    Choi, Y. (Peer reviewer)

    1/11/2021 → 5/11/2021

    Activity: Publication peer-review and editorial work types › Publication peer-review

  18. Proceedings of the Edinburgh Mathematical Society (Journal)

    Choi, Y. (Peer reviewer)

    30/10/2020 → 15/03/2021

    Activity: Publication peer-review and editorial work types › Publication peer-review

  19. Proceedings of the American Mathematical Society (Journal)

    Choi, Y. (Peer reviewer)

    2/05/2019 → 18/05/2019

    Activity: Publication peer-review and editorial work types › Publication peer-review

  20. PhD viva (Mathematics) at Lancaster University (Event)

    Choi, Y. (Chair)

    25/11/2019

    Activity: Membership types › Membership of committee

  21. Orthogonality relations and the study of derivations on Fourier algebras

    Choi, Y. (Invited speaker)

    24/07/2014

    Activity: Talk or presentation types › Invited talk

  22. Orthogonality relations and the study of derivations on Fourier algebras

    Choi, Y. (Invited speaker)

    18/01/2016

    Activity: Talk or presentation types › Invited talk

  23. Operator space tensor products, and cocycles on Fourier algebras

    Choi, Y. (Invited speaker)

    19/10/2021

    Activity: Talk or presentation types › Invited talk

  24. Operator space tensor products, and cocycles on Fourier algebras

    Choi, Y. (Invited speaker)

    29/11/2021

    Activity: Talk or presentation types › Invited talk

  25. NBFAS Meeting, Lancaster University

    Choi, Y. (Organiser)

    4/04/2024 → 5/04/2024

    Activity: Participating in or organising an event types › Participation in conference - Academic

  26. Mathematical Proceedings of the Cambridge Philosophical Society (Journal)

    Choi, Y. (Peer reviewer)

    23/01/2016 → 9/06/2016

    Activity: Publication peer-review and editorial work types › Publication peer-review

  27. Lower bounds on the amenability constant of the Fourier algebra

    Choi, Y. (Speaker)

    18/06/2022

    Activity: Talk or presentation types › Oral presentation

  28. Journal of the Australian Mathematical Society (Journal)

    Choi, Y. (Peer reviewer)

    26/03/2015 → 19/06/2015

    Activity: Publication peer-review and editorial work types › Publication peer-review

  29. Journal of the American Mathematical Society (Journal)

    Choi, Y. (Peer reviewer)

    12/07/2014 → 15/10/2014

    Activity: Publication peer-review and editorial work types › Publication peer-review

  30. Journal of Mathematical Analysis and Applications (Journal)

    Choi, Y. (Peer reviewer)

    18/11/2019 → 6/12/2020

    Activity: Publication peer-review and editorial work types › Publication peer-review

  31. Journal of Mathematical Analysis and Applications (Journal)

    Choi, Y. (Peer reviewer)

    21/12/2017 → 16/10/2018

    Activity: Publication peer-review and editorial work types › Publication peer-review

  32. Journal of Mathematical Analysis and Applications (Journal)

    Choi, Y. (Peer reviewer)

    22/06/2016 → 15/12/2016

    Activity: Publication peer-review and editorial work types › Publication peer-review

  33. Journal of Mathematical Analysis and Applications (Journal)

    Choi, Y. (Peer reviewer)

    25/11/2013 → 10/09/2014

    Activity: Publication peer-review and editorial work types › Publication peer-review

  34. Journal of Mathematical Analysis and Applications (Journal)

    Choi, Y. (Peer reviewer)

    6/01/2014 → 18/08/2014

    Activity: Publication peer-review and editorial work types › Publication peer-review

  35. Journal of Mathematical Analysis and Applications (Journal)

    Choi, Y. (Peer reviewer)

    6/01/2014 → 18/08/2014

    Activity: Publication peer-review and editorial work types › Publication peer-review

  36. Jorge Galindo

    Choi, Y. (Host) & Daws, M. (Host)

    26/02/2024 → 29/02/2024

    Activity: Hosting a visitor types › Hosting an academic visitor

  37. Jon Bannon

    Choi, Y. (Host)

    1/01/2019 → 30/06/2019

    Activity: Hosting a visitor types › Hosting an academic visitor

  38. International Mathematical Research Notices (Journal)

    Choi, Y. (Peer reviewer)

    25/01/2017 → 23/07/2017

    Activity: Publication peer-review and editorial work types › Publication peer-review

  39. Internal examiner for a PhD viva (Mathematics)

    Choi, Y. (Examiner)

    23/06/2017

    Activity: Examination types › Examination

  40. Internal examiner for a PhD viva (Mathematics)

    Choi, Y. (Examiner)

    7/05/2021

    Activity: Examination types › Examination

  41. Internal examiner for a PhD viva (Mathematics)

    Choi, Y. (Examiner)

    18/10/2023

    Activity: Examination types › Examination

  42. Indiana University Mathematics Journal (Journal)

    Choi, Y. (Peer reviewer)

    1/03/2016 → 20/12/2016

    Activity: Publication peer-review and editorial work types › Publication peer-review

  43. Illinois Journal of Mathematics (Journal)

    Choi, Y. (Peer reviewer)

    12/09/2015 → 6/09/2016

    Activity: Publication peer-review and editorial work types › Publication peer-review

  44. ICMS Research in Groups: Amenability Constants of Fourier Algebras

    Choi, Y. (Organiser) & Ghandehari, M. (Organiser)

    10/04/2025 → 17/04/2025

    Activity: Participating in or organising an event types › Participation in conference - Academic

  45. Houston Journal of Mathematics (Journal)

    Choi, Y. (Peer reviewer)

    16/01/2016 → 26/09/2016

    Activity: Publication peer-review and editorial work types › Publication peer-review

  46. Homological invariants of Fourier algebras

    Choi, Y. (Keynote speaker)

    12/07/2024

    Activity: Talk or presentation types › Invited talk

  47. Glasgow Mathematical Journal (Journal)

    Choi, Y. (Peer reviewer)

    4/02/2014 → 2/03/2014

    Activity: Publication peer-review and editorial work types › Publication peer-review

  48. Glasgow Mathematical Journal (Journal)

    Choi, Y. (Peer reviewer)

    20/03/2013 → 14/04/2013

    Activity: Publication peer-review and editorial work types › Publication peer-review

  49. Fourier algebras and dual convolution

    Choi, Y. (Invited speaker)

    2/12/2020

    Activity: Talk or presentation types › Invited talk

  50. External examiner for PhD viva (Newcastle)

    Choi, Y. (Examiner)

    9/01/2018

    Activity: Examination types › Examination

  51. External examiner for PhD viva (Leeds)

    Choi, Y. (Examiner)

    21/11/2016

    Activity: Examination types › Examination

  52. Dual convolution for the affine group of the real line

    Choi, Y. (Invited speaker)

    18/07/2023

    Activity: Talk or presentation types › Invited talk

  53. Directly finite algebras arising from group representations

    Choi, Y. (Invited speaker)

    3/10/2017

    Activity: Talk or presentation types › Invited talk

  54. Derivations on semigroup algebras and Fourier algebras

    Choi, Y. (Keynote speaker)

    6/08/2015

    Activity: Talk or presentation types › Invited talk

  55. Derivations on Fourier algebras of some connected Lie groups

    Choi, Y. (Invited speaker)

    21/03/2014

    Activity: Talk or presentation types › Invited talk

  56. Derivations on Fourier algebras of connected Lie groups

    Choi, Y. (Invited speaker)

    6/05/2014

    Activity: Talk or presentation types › Invited talk

  57. Derivations on Fourier algebras of connected groups

    Choi, Y. (Keynote speaker)

    8/04/2016

    Activity: Talk or presentation types › Invited talk

  58. Derivations from the disc algebra to various modules

    Choi, Y. (Invited speaker)

    19/09/2018

    Activity: Talk or presentation types › Invited talk

  59. Derivations and alternating cocycles on Fourier algebras

    Choi, Y. (Invited speaker)

    17/04/2018

    Activity: Talk or presentation types › Invited talk

  60. Derivations and 2-cocycles on Fourier algebras of connected groups

    Choi, Y. (Keynote speaker)

    15/06/2023

    Activity: Talk or presentation types › Invited talk

  61. David Blecher

    Choi, Y. (Host) & Daws, M. (Host)

    3/06/2024 → 7/06/2024

    Activity: Hosting a visitor types › Hosting an academic visitor

  62. Constructing amenable operator algebras

    Choi, Y. (Invited speaker)

    27/10/2015

    Activity: Talk or presentation types › Invited talk

  63. Constructing alternating cocycles on Fourier algebras

    Choi, Y. (Invited speaker)

    18/02/2020

    Activity: Talk or presentation types › Invited talk

  64. Constructing alternating cocycles on Fourier algebras

    Choi, Y. (Invited speaker)

    31/01/2019

    Activity: Talk or presentation types › Invited talk

  65. Complex Analysis and Operator Theory (Journal)

    Choi, Y. (Peer reviewer)

    10/01/2020 → 15/05/2020

    Activity: Publication peer-review and editorial work types › Publication peer-review

  66. Completely almost periodic elements of Hopf von Neumann algebras

    Choi, Y. (Invited speaker)

    16/09/2017

    Activity: Talk or presentation types › Invited talk

  67. Completely almost periodic elements of group von Neumann algebras

    Choi, Y. (Invited speaker)

    6/04/2021

    Activity: Talk or presentation types › Invited talk

  68. CAP and ITAP for group von Neumann algebras

    Choi, Y. (Keynote speaker)

    16/08/2016

    Activity: Talk or presentation types › Invited talk

  69. Canadian Mathematical Bulletin (Journal)

    Choi, Y. (Peer reviewer)

    6/09/2018 → 27/09/2018

    Activity: Publication peer-review and editorial work types › Publication peer-review

  70. Canadian Journal of Mathematics (Journal)

    Choi, Y. (Peer reviewer)

    29/06/2015 → 17/02/2016

    Activity: Publication peer-review and editorial work types › Publication peer-review

  71. Bulletin des Sciences Mathématiques (Journal)

    Choi, Y. (Peer reviewer)

    18/08/2019 → 17/10/2019

    Activity: Publication peer-review and editorial work types › Publication peer-review

  72. British Mathematical Colloquium

    Choi, Y. (Member of programme committee)

    8/04/2019 → 11/04/2019

    Activity: Participating in or organising an event types › Participation in conference -Mixed Audience

  73. BIRS Research in Teams: Homological invariants of Fourier algebras

    Choi, Y. (Organiser) & Ghandehari, M. (Organiser)

    2/03/2024 → 10/03/2024

    Activity: Participating in or organising an event types › Participation in conference - Academic

  74. Banach Journal of Mathematical Analysis (Journal)

    Choi, Y. (Peer reviewer)

    12/05/2021 → 21/11/2021

    Activity: Publication peer-review and editorial work types › Publication peer-review

  75. Banach algebra extensions of C*-algebras

    Choi, Y. (Speaker)

    5/07/2024

    Activity: Talk or presentation types › Invited talk

  76. Approximate homomorphisms: some old and new results

    Choi, Y. (Keynote speaker)

    11/07/2019 → 18/07/2019

    Activity: Talk or presentation types › Invited talk

  77. AP, WAP, CAP and another AP

    Choi, Y. (Invited speaker)

    17/05/2016

    Activity: Talk or presentation types › Invited talk

  78. An introduction to non-amenability of B(E)

    Choi, Y. (Invited speaker)

    19/11/2020

    Activity: Talk or presentation types › Invited talk

  79. Amenable operator algebras: extensions and unitarizability

    Choi, Y. (Invited speaker)

    18/10/2022

    Activity: Talk or presentation types › Invited talk

  80. Amenable operator algebras

    Choi, Y. (Speaker)

    14/03/2014

    Activity: Talk or presentation types › Invited talk

  81. Amenable algebras of operators on Hilbert space

    Choi, Y. (Keynote speaker)

    28/01/2022

    Activity: Talk or presentation types › Invited talk

  82. Amenability constants of Fourier algebras

    Choi, Y. (Speaker)

    6/09/2024

    Activity: Talk or presentation types › Invited talk

  83. Amenability constants of centres of group algebras

    Choi, Y. (Invited speaker)

    3/03/2020

    Activity: Talk or presentation types › Invited talk

  84. Alternating cocycles on Fourier algebras of Lie groups

    Choi, Y. (Keynote speaker)

    26/08/2019 → 29/08/2019

    Activity: Talk or presentation types › Invited talk

  85. Alternating cocycles on Fourier algebras of Lie groups

    Choi, Y. (Keynote speaker)

    12/01/2023

    Activity: Talk or presentation types › Invited talk

  86. A twisted inclusion of operator space tensor products

    Choi, Y. (Invited speaker)

    19/08/2021

    Activity: Talk or presentation types › Invited talk

  87. A look at Fourier algebras of some Lie groups

    Choi, Y. (Speaker)

    21/06/2018

    Activity: Talk or presentation types › Invited talk

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