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Dr Yemon Choi

Lecturer

  1. 2020
  2. Forthcoming

    A short proof that B(L_1) is not amenable

    Choi, Y., 12/10/2020, (Accepted/In press) In : Proceedings of the Royal Society of Edinburgh: Section A Mathematics.

    Research output: Contribution to journalJournal article

  3. Forthcoming

    Stability of characters and filters for weighted semilattices

    Choi, Y., Ghandehari, M. & Pham, H. L., 2/09/2020, (Accepted/In press) In : Semigroup Forum.

    Research output: Contribution to journalJournal article

  4. 2016
  5. Published

    A gap theorem for the ZL-amenability constant of a finite group

    Choi, Y., 12/2016, In : International Journal of Group Theory. 5, 4, p. 27-46 20 p.

    Research output: Contribution to journalJournal article

  6. Published

    Triviality of the generalized Lau product associated to a Banach algebra homomorphism

    Choi, Y., 10/2016, In : Bulletin of the Australian Mathematical Society. 94, p. 286-289 4 p.

    Research output: Contribution to journalJournal article

  7. Published

    Realization of compact spaces as cb-Helson sets

    Choi, Y., 02/2016, In : Annals of Functional Analysis. 7, 1, p. 158-169 12 p.

    Research output: Contribution to journalJournal article

  8. 2015
  9. Published

    Extension of derivations, and Connes-amenability of the enveloping dual Banach algebra

    Choi, Y., Samei, E. & Stokke, R., 14/12/2015, In : Mathematica Scandinavica. 117, 2, p. 258-303 46 p.

    Research output: Contribution to journalJournal article

  10. Published

    Directly finite algebras of pseudofunctions on locally compact groups

    Choi, Y., 09/2015, In : Glasgow Mathematical Journal. 57, 3, p. 693-707 15 p.

    Research output: Contribution to journalJournal article

  11. Published

    Weak amenability for Fourier algebras of 1-connected nilpotent Lie groups

    Choi, Y. & Ghandehari, M., 15/04/2015, In : Journal of Functional Analysis. 268, 8, p. 2440-2463 24 p.

    Research output: Contribution to journalJournal article

  12. 2014
  13. Published

    A nonseparable amenable operator algebra which is not isomorphic to a {$C^*$}-algebra

    Choi, Y., Farah, I. & Ozawa, N., 10/03/2014, In : Forum of Mathematics, Sigma. 2, 12 p., e2.

    Research output: Contribution to journalJournal article

  14. Published

    ZL-amenability and characters for the group algebras of restricted direct products of finite groups

    Alaghmandan, M., Choi, Y. & Samei, E., 1/03/2014, In : Journal of Mathematical Analysis and Applications. 411, 1, p. 314-328 15 p.

    Research output: Contribution to journalJournal article

  15. Published

    Singly generated operator algebras satisfying weakened versions of amenability

    Choi, Y., 2014, Algebraic methods in functional analysis: the Victor Shulman anniversary volume. Todorov, I. G. & Turowska, L. (eds.). Basel: Springer Verlag, p. 33-44 12 p. (Operator Theory: Advances and Applications; vol. 233).

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNChapter

  16. Published

    ZL-amenability constants of finite groups with two character degrees

    Alaghmandan, M., Choi, Y. & Samei, E., 2014, In : Canadian Mathematical Bulletin. 57, p. 449-462 14 p.

    Research output: Contribution to journalJournal article

  17. 2013
  18. Published

    Approximately multiplicative maps from weighted semilattice algebras

    Choi, Y., 08/2013, In : Journal of the Australian Mathematical Society. 95, 1, p. 36-67 32 p.

    Research output: Contribution to journalJournal article

  19. Published

    On commutative, operator amenable subalgebras of finite von Neumann algebras

    Choi, Y., 05/2013, In : Journal für die reine und angewandte Mathematik (Crelle's Journal). 678, p. 201-222 22 p.

    Research output: Contribution to journalJournal article

  20. Published

    Quotients of Fourier algebras, and representations which are not completely bounded

    Choi, Y. & Samei, E., 20/03/2013, In : Proceedings of the American Mathematical Society. 141, 7, p. 2379-2388 10 p.

    Research output: Contribution to journalJournal article

  21. 2012
  22. Published

    Simplicial cohomology of band semigroup algebras

    Choi, Y., Gourdeau, F. & White, M. C., 08/2012, In : Proceedings of the Royal Society of Edinburgh: Section A Mathematics. 142, 4, p. 715-744 30 p.

    Research output: Contribution to journalJournal article

  23. 2011
  24. Published

    Characterizing derivations from the disk algebra to its dual

    Choi, Y. & Heath, M. J., 3/08/2011, In : Proceedings of the American Mathematical Society. 139, 3, p. 1073-1080 8 p.

    Research output: Contribution to journalJournal article

  25. Published

    Approximate amenability of Schatten classes, Lipschitz algebras and second duals of Fourier algebras

    Choi, Y. & Ghahramani, F., 2011, In : The Quarterly Journal of Mathematics. 62, 1, p. 39-58 20 p.

    Research output: Contribution to journalJournal article

  26. 2010
  27. Published

    Group representations with empty residual spectrum

    Choi, Y., 05/2010, In : Integral Equations and Operator Theory. 67, 1, p. 95-107 13 p.

    Research output: Contribution to journalJournal article

  28. Published

    Simplicial cohomology of augmentation ideals in $\ell^1(G)$

    Choi, Y., 02/2010, In : Proceedings of the Edinburgh Mathematical Society. 53, 1, p. 97-109 13 p.

    Research output: Contribution to journalJournal article

  29. Published

    Hochschild homology and cohomology of $\ell^1(\mathbb Z_+^k)$

    Choi, Y., 2010, In : The Quarterly Journal of Mathematics. 61, 1, p. 1-28 28 p.

    Research output: Contribution to journalJournal article

  30. Published

    Injective convolution operators on $\ell^infty(\Gamma)$ are surjective

    Choi, Y., 2010, In : Canadian Mathematical Bulletin. 53, 3, p. 447-452 6 p.

    Research output: Contribution to journalJournal article

  31. Published

    Simplicial homology of strong semilattices of Banach algebras

    Choi, Y., 2010, In : Houston Journal of Mathematics. 36, 1, p. 237-260 24 p.

    Research output: Contribution to journalJournal article

  32. Published

    Splitting maps and norm bounds for the cyclic cohomology of biflat Banach algebras

    Choi, Y., 2010, Banach Algebras 2009. Loy, R. J., Runde, V. & Sołtysiak, A. (eds.). Warsaw: Polish Academy of Sciences, p. 105-121 17 p. (Banach Center Publications; vol. 91).

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNChapter

  33. Published

    Translation-finite sets and weakly compact derivations from $\ell^1(\mathbb Z_+)$ to its dual

    Choi, Y. & Heath, M. J., 2010, In : Bulletin of the London Mathematical Society. 42, 3, p. 429-440 12 p.

    Research output: Contribution to journalJournal article

  34. 2009
  35. Published

    Uniform bounds for point cohomology of $\ell^1(\mathbb Z_+)$ and related algebras

    Choi, Y., 15/10/2009, In : Journal of Mathematical Analysis and Applications. 358, 2, p. 249-260 12 p.

    Research output: Contribution to journalJournal article

  36. Published

    Approximate and pseudo-amenability of various classes of Banach algebras

    Choi, Y., Ghahramani, F. & Zhang, Y., 15/05/2009, In : Journal of Functional Analysis. 256, 10, p. 3158-3191 34 p.

    Research output: Contribution to journalJournal article

  37. 2007
  38. Published

    Biflatness of $\ell^1$-semilattice algebras

    Choi, Y., 10/2007, In : Semigroup Forum. 75, 2, p. 253-271 19 p.

    Research output: Contribution to journalJournal article

  39. 2006
  40. Published

    Simplicial homology and Hochschild cohomology of Banach semilattice algebras

    Choi, Y., 05/2006, In : Glasgow Mathematical Journal. 48, 2, p. 231-245 15 p.

    Research output: Contribution to journalJournal article

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