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Dr Yemon Choi

Senior Lecturer in Pure Mathematics

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  1. 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 Journal/Magazine › Journal article › peer-review

  2. 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 Journal/Magazine › Journal article › peer-review

  3. Published

    A short proof that B(L_1) is not amenable

    Choi, Y., 31/12/2021, In: Proceedings of the Royal Society of Edinburgh: Section A Mathematics. 151, 6, p. 1758-1767 10 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  4. Published

    An explicit minorant for the amenability constant of the Fourier algebra

    Choi, Y., 30/11/2023, In: International Mathematics Research Notices. 2023, 22, p. 19390–19430

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  5. 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 Journal/Magazine › Journal article › peer-review

  6. 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 Journal/Magazine › Journal article › peer-review

  7. Published

    Approximately multiplicative maps between algebras of bounded operators on Banach spaces

    Choi, Y., Horvath, B. & Laustsen, N., 31/10/2022, In: Transactions of the American Mathematical Society. 375, 10, p. 7121-7147 27 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  8. 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 Journal/Magazine › Journal article › peer-review

  9. 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 Journal/Magazine › Journal article › peer-review

  10. 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 Journal/Magazine › Journal article › peer-review

  11. Published

    Constructing alternating 2-cocycles on Fourier algebras

    Choi, Y., 16/07/2021, In: Advances in Mathematics. 385, 28 p., 107747.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  12. 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 Journal/Magazine › Journal article › peer-review

  13. Published

    Dual convolution for the affine group of the real line

    Choi, Y. & Ghandehari, M., 22/05/2021, In: Complex Analysis and Operator Theory. 15, 4, 32 p., 76.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  14. 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 Journal/Magazine › Journal article › peer-review

  15. 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 Journal/Magazine › Journal article › peer-review

  16. 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 Journal/Magazine › Journal article › peer-review

  17. 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 Journal/Magazine › Journal article › peer-review

  18. 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 Journal/Magazine › Journal article › peer-review

  19. Published

    Operators, Semigroups, Algebras and Function Theory: Volume from IWOTA Lancaster 2021

    Choi, Y. (ed.), Daws, M. (ed.) & Blower, G. (ed.), 6/12/2023, Cham: Springer Birkhäuser. 264 p. (Operator Theory: Advances and Applications; vol. 292)

    Research output: Book/Report/Proceedings › Proceedings

  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 Journal/Magazine › Journal article › peer-review

  21. 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 Journal/Magazine › Journal article › peer-review

  22. 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 Journal/Magazine › Journal article › peer-review

  23. 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 Journal/Magazine › Journal article › peer-review

  24. 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 Journal/Magazine › Journal article › peer-review

  25. 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 Journal/Magazine › Journal article › peer-review

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