Asymptotic geometry of Banach spaces and uniform quotient maps

Recently, Lima and Randrianarivony pointed out the role of the property $(β)$ of Rolewicz in nonlinear quotient problems, and answered a ten-year-old question of Bates, Johnson, Lindenstrauss, Preiss and Schechtman. In the present paper, we prove that the modulus of asymptotic uniform smoothness of the range space of a uniform quotient map can be compared with the modulus of $(β)$ of the domain space. We also provide conditions under which this comparison can be improved.

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