22 citations · 148 across the 40 of their papers we have counts for
4 papers · 1 filter
Splitting maps and norm bounds for the cyclic cohomology of biflat Banach algebras
Yemon Choi
We revisit the old result that biflat Banach algebras have the same cyclic cohomology as , and obtain a quantitative variant (which is needed in forthcoming joint work o…
Characterising derivations from the disc algebra to its dual
Yemon Choi, Matthew J. Heath
We show that the space of all bounded derivations from the disc algebra into its dual can be identified with the Hardy space ; using this, we infer that all such derivations a…
Group representations with empty residual spectrum
Yemon Choi
Let be a Banach space on which a discrete group acts by isometries. For certain natural choices of , every element of the group algebra, when regarded as an operator on…
Approximate amenability of Schatten classes, Lipschitz algebras and second duals of Fourier algebras
Yemon Choi, Fereidoun Ghahramani
Amenability of any of the algebras described in the title is known to force them to be finite-dimensional. The analogous problems for \emph{approximate} amenability have been open…