December 1972
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11 Reads
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15 Citations
Pacific Journal of Mathematics
In this paper it is proved that a C∗-algebra A is strongly amenable iff A satisfies a certain fixed point property when acting on a compact convex set, or iff a certain Hahn-Banach type extension theorem is true for all Banach A-modules. It is proved that a C∗-algebra A is amenable iff A satisfies a weaker Hahn-Banach type extension theorem.