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Research

Dr Yemon Choi

Senior Lecturer in Pure Mathematics

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  1. 2025

  2. 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

  3. 2024

  4. Amenability constants of Fourier algebras

    Choi, Y. (Speaker)

    6/09/2024

    Activity: Talk or presentation types › Invited talk

  5. Homological invariants of Fourier algebras

    Choi, Y. (Keynote speaker)

    12/07/2024

    Activity: Talk or presentation types › Invited talk

  6. Banach algebra extensions of C*-algebras

    Choi, Y. (Speaker)

    5/07/2024

    Activity: Talk or presentation types › Invited talk

  7. 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

  8. David Blecher

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

    3/06/2024 → 7/06/2024

    Activity: Hosting a visitor types › Hosting an academic visitor

  9. 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

  10. 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

  11. Jorge Galindo

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

    26/02/2024 → 29/02/2024

    Activity: Hosting a visitor types › Hosting an academic visitor

  12. 2023

  13. Internal examiner for a PhD viva (Mathematics)

    Choi, Y. (Examiner)

    18/10/2023

    Activity: Examination types › Examination

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

    Choi, Y. (Invited speaker)

    18/07/2023

    Activity: Talk or presentation types › Invited talk

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

    Choi, Y. (Keynote speaker)

    15/06/2023

    Activity: Talk or presentation types › Invited talk

  16. Alternating cocycles on Fourier algebras of Lie groups

    Choi, Y. (Keynote speaker)

    12/01/2023

    Activity: Talk or presentation types › Invited talk

  17. 2022

  18. Amenable operator algebras: extensions and unitarizability

    Choi, Y. (Invited speaker)

    18/10/2022

    Activity: Talk or presentation types › Invited talk

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

    Choi, Y. (Speaker)

    18/06/2022

    Activity: Talk or presentation types › Oral presentation

  20. Unitarizability, extensions, and amenable operator algebras

    Choi, Y. (Invited speaker)

    31/03/2022

    Activity: Talk or presentation types › Invited talk

  21. Amenable algebras of operators on Hilbert space

    Choi, Y. (Keynote speaker)

    28/01/2022

    Activity: Talk or presentation types › Invited talk

  22. 2021

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

    Choi, Y. (Invited speaker)

    29/11/2021

    Activity: Talk or presentation types › Invited talk

  24. 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

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

    Choi, Y. (Invited speaker)

    19/10/2021

    Activity: Talk or presentation types › Invited talk

  26. A twisted inclusion of operator space tensor products

    Choi, Y. (Invited speaker)

    19/08/2021

    Activity: Talk or presentation types › Invited talk

  27. 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

  28. Internal examiner for a PhD viva (Mathematics)

    Choi, Y. (Examiner)

    7/05/2021

    Activity: Examination types › Examination

  29. Completely almost periodic elements of group von Neumann algebras

    Choi, Y. (Invited speaker)

    6/04/2021

    Activity: Talk or presentation types › Invited talk

  30. 2020

  31. Fourier algebras and dual convolution

    Choi, Y. (Invited speaker)

    2/12/2020

    Activity: Talk or presentation types › Invited talk

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

    Choi, Y. (Invited speaker)

    19/11/2020

    Activity: Talk or presentation types › Invited talk

  33. 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

  34. Amenability constants of centres of group algebras

    Choi, Y. (Invited speaker)

    3/03/2020

    Activity: Talk or presentation types › Invited talk

  35. University of Delaware

    Choi, Y. (Visiting researcher)

    1/03/2020 → 11/03/2020

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

  36. Constructing alternating cocycles on Fourier algebras

    Choi, Y. (Invited speaker)

    18/02/2020

    Activity: Talk or presentation types › Invited talk

  37. 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

  38. 2019

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

    Choi, Y. (Chair)

    25/11/2019

    Activity: Membership types › Membership of committee

  40. 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

  41. 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

  42. 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

  43. Approximate homomorphisms: some old and new results

    Choi, Y. (Keynote speaker)

    11/07/2019 → 18/07/2019

    Activity: Talk or presentation types › Invited talk

  44. 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

  45. 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

  46. Constructing alternating cocycles on Fourier algebras

    Choi, Y. (Invited speaker)

    31/01/2019

    Activity: Talk or presentation types › Invited talk

  47. Jon Bannon

    Choi, Y. (Host)

    1/01/2019 → 30/06/2019

    Activity: Hosting a visitor types › Hosting an academic visitor

  48. 2018

  49. Derivations from the disc algebra to various modules

    Choi, Y. (Invited speaker)

    19/09/2018

    Activity: Talk or presentation types › Invited talk

  50. 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

  51. Twisted tensor products, and cocycles on Fourier algebras

    Choi, Y. (Invited speaker)

    26/06/2018

    Activity: Talk or presentation types › Invited talk

  52. A look at Fourier algebras of some Lie groups

    Choi, Y. (Speaker)

    21/06/2018

    Activity: Talk or presentation types › Invited talk

  53. Derivations and alternating cocycles on Fourier algebras

    Choi, Y. (Invited speaker)

    17/04/2018

    Activity: Talk or presentation types › Invited talk

  54. External examiner for PhD viva (Newcastle)

    Choi, Y. (Examiner)

    9/01/2018

    Activity: Examination types › Examination

  55. 2017

  56. 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

  57. Directly finite algebras arising from group representations

    Choi, Y. (Invited speaker)

    3/10/2017

    Activity: Talk or presentation types › Invited talk

  58. Completely almost periodic elements of Hopf von Neumann algebras

    Choi, Y. (Invited speaker)

    16/09/2017

    Activity: Talk or presentation types › Invited talk

  59. Internal examiner for a PhD viva (Mathematics)

    Choi, Y. (Examiner)

    23/06/2017

    Activity: Examination types › Examination

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