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In this paper we consider the Holm-Staley b-family of equations in the Sobolev spaces H-s (R) for s > 3/2. Using a geometric approach we show that, for any value of the parameter b, the corresponding solution map, u(0) bar right arrow u(T), is nowhere locally uniformly continuous.
Michaël Unser, Sebastian Jonas Neumayer, Pol del Aguila Pla